You can use this method in the loop in case you want to read more than one character from the screen. While using W3Schools, you agree to have read and accepted our. This is the last step in this program because the user input is now read and printed. The file pointers are the means to access the file for reading and writing purpose. Program Explanation: Here,declare the variable ch as char data type, and then get a value through getchar ()library function and store it in the variable ch.And then,print the value of variable ch. Input all three values in this form [a b c] If a term is missing, use zero as a placeholder Input values (include square brackets): '); this is an input function that tells the user to input 3. The scanf() method, in C, reads the value from the console as per the type specified. These are: Standard input or stdin is used for taking input from devices such as the keyboard as a data stream. rev2022.12.11.43106. Example: Input: Input integer, float and Is it correct to say "The glue on the back of the sticker is dying down so I can not stick the sticker to the wall"? Affordable solution to train a team and make them project ready. For example: const myString = "linto.yahoo.com. The steps listed below explain how C++ accepts and return a character input from a user: The Cin method in C++ is used together with the extraction operator which is written as >> and then followed by the variable where the extracted value is stored. For the %c specifier, scanf needs the address of the location into which the character is to be stored, but printf needs the value of the cha Also it manually manages the lifetime of the array in a non-exception safe manner, though that can be fixed with smart pointers. The value entered by the user is then taken using the extraction operator. Examples might be simplified to improve reading and learning. Either Read a single char char name[2]; Input: 5 2 9 4 7 2 When we say Output, it means to display some data on screen, printer, or in any file. Here, we are going to learn how to input an integer, a float and a character value using single scanf() function in C programming language? So, the scanf is being passed the address of the first element of the name array, which is where the character will be stored; however, the printf is also being passed the address, which is wrong. Making statements based on opinion; back them up with references or personal experience. If you need to take an character array as input you should use scanf ("%s",name), printf ("%s",name); rather than using the %c . By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. The format can be a simple constant string, but you can specify %s, %d, %c, %f, etc., to print or read strings, integer, character or float respectively. How to make voltage plus/minus signs bolder? From the above, statement, the cout method simply helps to print the value of the integer passed to the name variable by the user. The %c returns the pointer to a character which But when i do this: Enter the first character: 12 Enter the second character: You need %s since because name contains 2 elements. %c is used for single character so if you want the user to input something for e.g. "as"(withou It would be better to declare a single character and pass its address explicitly: On the other hand, if you were trying to read a string instead of a single character, then you should be using %s instead of %c. A-143, 9th Floor, Sovereign Corporate Tower, We use cookies to ensure you have the best browsing experience on our website. The charAt () method returns the character at the specified index in a string. Write a program in C to get a character input from the user and then check if it is a digit. cin >> num; to take input from the user. %c is used for single character so if you want the user to input something for e.g. Get certifiedby completinga course today! 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You can use this method in conjunction with the length property of a string to get the last character in that string. In this article, you will learn and get code on getting input from user at run-time using a C program. . You can take input of any data type by a user. By using our site, you Enter an integer: 70 The number is: 70. The int puts(const char *s) function writes the string 's' and 'a' trailing newline to stdout. at the end of your script and it'll keep the window open. I am just starting to learn C. I'm curious about the above code, what I got from the printf output, is not the same with the character I typed in. There are 4 methods by which the C program accepts a string with space Note: If we don't include the using namespace std; statement, we need to 12pt, a4paper, oneside]{book} \usepackage{listings} . The %c returns the pointer to a character which cannn't be stored in pointer to character array. Luckily, I was able to parse through the extra characters one-by-one and get something working. Moving entirely away from the raw array to an object that manages its own resources is better: If you need a char const * from a string you can use std::string::c_str(). Forster talked a lot about the fact that major studios really arent in the business much of making these kinds of smaller, character-driven family movies anymore, even ones Help us identify new roles for community members, Proposing a Community-Specific Closure Reason for non-English content. In standard C/C++, streams are buffered, for example in the case of standard input, when we press any key on All rights reserved. Enter the first character: 1 Enter the second character: The characters are 1 and. To learn more, see our tips on writing great answers. In C, we can use scanf () to take a string input in C without spaces. How do I iterate over the words of a string? C programming provides a set of built-in functions to read the Step 2: You can use this method in the loop in case you want to display more than one character on the screen. In the program, we used. Practice your skills in a hands-on, setup-free coding environment. Do bracers of armor stack with magic armor enhancements and special abilities? Enjoy unlimited access on 5500+ Hand Picked Quality Video Courses. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. Solution Playing With Characters in C HackerRank Solution #include #include #include #include int main() { /* Enter your code here. The question concerns about specifiers not input size. Here, it should be noted that scanf() expects input in the same format as you provided %s and %d, which means you have to provide valid inputs like "string integer". Are the S&P 500 and Dow Jones Industrial Average securities? Example code 1 : The basic way is if the user will give the size of the vector then we can take input into vector simply using for loop. Find centralized, trusted content and collaborate around the technologies you use most. Important remark: The convention for an IPv4 address, is to use The scanf () method, in C, reads the value from the console as per the type specified. #include using namespace std; int main () { char* str; std::cin>>str; return 0; } I tabs, etc) as a terminating character, which means that it can only display a I obviously understand that str in only a pointer pointing to nothing and hence cannot take an input. The Syntax for input and output for these are: Please refer Format specifiers in C for more examples. What properties should my fictional HEAT rounds have to punch through heavy armor and ERA? I needed an strict validation for a comma separated input alphabetic characters, no spaces. How to convert a std::string to const char* or char*. By the way, you cannot use string.Replace for what you try to achieve, because it will replace all occurences of a character or substring at once in the entire string. Enter a character: g You entered g. When a character is entered by the user in the above program, the character itself is not stored. For the %c specifier, scanf needs the address of the location into which the character is to be stored, but printf needs the value of the character, not its address. The input function scanf can be used with %s format specification to read in a string of characters. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. Ready to optimize your JavaScript with Rust? You can use this method in conjunction with the length property of a string to get the last character in that string. When we say Input, it means to feed some data into a program. printf("%s",name); The stdio.h or standard input output library in C that has methods for input and output. By using %d for an integer and %c for a character we are specifying the format of the input that we are expecting from the user. Storing input in the variable. How to take integer Number input. To output a single character we use the putchar() function. scanf ("%x.%x.%x.%x",&IP_1,&IP_2,&IP_3,&IP_4); You'll find more about the input formatting with scanf () here. Syntax: printf(%X, variableOfXType); where %X is the format specifier in C. It is a way to tell the compiler what type of data is in a variable and & is the address operator in C, which tells the compiler to change the real value of this variable, stored at this address in the memory. "); will be executed. Following are some of the functions from the ctype.h file that we can use to test characters. We will first take the character as input using the getchar() function then we will use the isdigit() function to check if the entered character is a digit. Adding libraries for input, 2. For example: From the example above, you would expect the program to print "John Doe", but it only prints "John". Does integrating PDOS give total charge of a system? How can I remove a specific item from an array? To learn more, see our tips on writing great answers. Reading One Word. NOTE: Though it has been deprecated to use gets() function, Instead of using gets, you want to use fgets(). Most keyboards have two ALT keys, left and right. if you give your input which contains characters less than or equal to two you will get a correct output just as your input if your input contains characters greater than 3 then it doesn't work. Asking for help, clarification, or responding to other answers. Syntax: scanf (%X, &variableOfXType); where %X is the format specifier in C. It is a Change the printf format, @WeatherVane thats just how i learned to program and it stayed with me :D, to read a string that contains more no of characters just increase the character array to a[300] or a[no of chars in a string]. // Your name is: John. The basic type in C includes types like int, float, char, etc. In C++ cin function is used to get form the user. When you enter a text and press enter, then program proceeds and reads the input and displays it as follows . Here are the list of programs (based on user input-type) available over here: Get Integer Input; Get Character Input; Get String Input; Get Integer Input. rev2022.12.11.43106. The iostream library allows the use of the cin object in C++ language. Syntax: scanf(%X, &variableOfXType); where %X is the format specifier in C. It is a way to tell the compiler what type of data is in a variable and & is the address operator in C, which tells the compiler to change the real value of this variable, stored at this address in the memory. Tutorials, references, and examples are constantly reviewed to avoid errors, but we cannot warrant full correctness of all content. reference operator (&myNum), which stores the memory address of the variable. Inorder to input or output the specific type, the X in the above syntax is changed with the specific format specifier of that type. The char *gets(char *s) function reads a line from stdin into the buffer pointed to by s until either a terminating newline or EOF (End of File). The value 0x8000 contains the bit flag that tests whether the key is currently pressed. This function puts only single character at a time. So, the ampersand will be used in front of the By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Is there a higher analog of "category with all same side inverses is a groupoid"? cout << "Your name is: " << firstName; // Type your first name: John. stdlib is the standard C library for input-output operations. No, a pointer stores a memory address, not characters. In the following example we take a single character as input and then output it using putchar() function. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Or if you really need a char* you can do the following: Thanks for contributing an answer to Stack Overflow! This challenge will help you to learn how to take a character, a string and a sentence as input in C. To take a single character as input, you can use scanf ("%c", &ch ); and printf ("%c", ch) writes a character specified by the argument char to stdout. When we say Input, it means to feed some data into a program. In order to input or output the string type, the X in the above syntax is changed with the %s format specifier. The printf should be like this: Note that the scanf argument is technically ok, it is a little weird to be passing an array, when a pointer to a single character would suffice. Initializing the variable, 3. The access specifier for string is %s. printf("%c",name[0]); Learn more, Artificial Intelligence & Machine Learning Prime Pack. We can use the ctype.h header file from the C library to perform tests on characters. reference operator (&) when working with strings in scanf(). Arbitrary shape cut into triangles and packed into rectangle of the same area, Disconnect vertical tab connector from PCB. During the program execution, a single character is get or read through the getchar (). In this shot, we want to briefly look at how to accept a character input from a user and print the given input in C++. Tip: You will learn more about memory addresses and functions in the next chapter. In the following example we will take a character as input from the user and will print the ASCII code of the character. See the code below to understand it better. Is it appropriate to ignore emails from a student asking obvious questions? how to take input into a character pointer in c++. Note that you must include the following Why was USB 1.0 incredibly slow even for its time? Year-End Discount: 10% OFF 1-year and 20% OFF 2-year subscriptions!Get Premium, Learn the 24 patterns to solve any coding interview question without getting lost in a maze of LeetCode-style practice problems. These extra hidden characters are what is messing with your input and spawning the infinite while loop. Problem Statement#1: Write a C program to read a single character as input in C. Syntax-scanf("%c", &charVariable); Approach-scanf() needs to know the memory location of a variable in order to store the input from the user. Jun 17, 2014 at 13:52. Examples of frauds discovered because someone tried to mimic a random sequence. read a line of text. Is Kris Kringle from Miracle on 34th Street meant to be the real Santa? I can't enter the second character. You need %s since because name contains 2 elements. What is this fallacy: Perfection is impossible, therefore imperfection should be overlooked, Save wifi networks and passwords to recover them after reinstall OS, Counterexamples to differentiation under integral sign, revisited, Exchange operator with position and momentum. When you enter a text and press enter, then the program proceeds and reads the complete line till end, and displays it as follows . But, it accepts string only until it finds the first space. If you provide "string string" or "integer integer", then it will be assumed as wrong input. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Agree For character we need to CGAC2022 Day 10: Help Santa sort presents! You have already learned that printf() is used to output values in C. To get user input, you can use the scanf() function: The scanf() function takes two arguments: the format specifier of the variable (%d in the example above) and the cout << "Type your first name: "; cin >> firstName; // get user input from the keyboard. Is it possible to hide or delete the new Toolbar in 13.1? So, if isdigit(ch) returns non-zero value then the code inside the if-block printf("Entered character is a digit. This piece of code prints the character . We will learn more about if-else statement in the later tutorial. scanf("%1s",name); While dealing with input-output operations in C, two important streams play their role. Thanks for contributing an answer to Stack Overflow! set /p asd="Hit enter to continue". We use the >> operator with cin to take input. If you need to take an character array as input you should use scanf("%s",name), printf("%s",name); rather than using the %c . That's why, when working with strings, we often use the fgets() function to "); will be executed. However there are problems with this; primarily the fact that it uses a raw array with a fixed size you have to manage. Here we are making use of the scanf () function to take the user inputs. Step 4: from the code above, the first statement char name decalares the variable of type char (which stands for character) we called name while the second, cin>>name, extracts a value to be stored in it from Cin. Learn in-demand tech skills in half the time. Would it be possible, given current technology, ten years, and an infinite amount of money, to construct a 7,000 foot (2200 meter) aircraft carrier? Why would Henry want to close the breach? Output. We have to read tree values: integer, float and then character using only one scanf() function and then print all values in separate lines.. There are four steps to take input from the user: 1. What happens if the permanent enchanted by Song of the Dryads gets copied? How to take integer input from user in C. However, cin We do not currently allow content pasted from ChatGPT on Stack Overflow; read our policy here. For Example : char instr[10]; scanf("%s",instr); The problem with the scanf The advanced type in C includes type like String. Connect and share knowledge within a single location that is structured and easy to search. By using this website, you agree with our Cookies Policy. Instead, an integer value (ASCII value) is stored. We can take string input in C using scanf (%s, str). Copyright 2014 - 2022 DYclassroom. How do I check if an array includes a value in JavaScript? 1. Hopefully this helps someone else! If you're just quickly looking to keep a cmd instance open instead of exiting immediately, simply doing the following is enough. Now lets talk about how to take user input in our program and then return some output. Not the answer you're looking for? How to insert an item into an array at a specific index (JavaScript), Sort array of objects by string property value, Improve INSERT-per-second performance of SQLite. Or read a string char name[2]; Step 5: Cout output stream is then used to print out the value the user entered. how to take input into a character pointer in c++. The scanf () function takes two arguments: the format specifier of the variable ( %d in the example above) and the reference operator ( &myNum ), which stores the memory address An input can be given in the form of a file or from the command line. However, the scanf() function has some limitations: it considers space (whitespace, It is possible to add more than one input at a time. The steps listed below explain how C++ accepts and return a character input from a user: Step1: The program will wait for the user to enter a character value. The int putchar(int c) function puts the passed character on the screen and returns the same character. C Program to take character input from users and print. you can use a Scanner to read from input : Scanner scanner = new Scanner(System.in); char c = scanner.next().charAt(0); //charAt() method returns the character at the specified index in a What is a smart pointer and when should I use one? An input can be given in the form of a file or from the command line. C programming provides a set of built-in functions to read the given input and feed it to the program as per requirement. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Do bracers of armor stack with magic armor enhancements and special abilities? cin allows you to take any type of data, it may be integers, floating points, double numbers, characters, or strings. Add a comment. The input is stored in the variable num. But first, we will learn to take input into a 1D vector from the user. If you want to report an error, or if you want to make a suggestion, do not hesitate to send us an e-mail: // Create an integer variable that will store the number we get from the user, W3Schools is optimized for learning and training. This function reads only single character at a time. Find centralized, trusted content and collaborate around the technologies you use most. We will first take the character as input using the getchar() function then we will use the isdigit() How do I set, clear, and toggle a single bit? The previous example tests whether either of them of pressed. All the given functions will return non-zero (true) value if the condition is satisfied by the passed argument c. If the condition fails then we will get zero (false). single word (even if you type many words). The printf() method, in C, prints the value passed as the parameter to it, on the console screen. Why was USB 1.0 incredibly slow even for its time? Submitted by IncludeHelp, on September 11, 2018 . This answer doesn't address the OP question, nor is it relevant to the behavior of the question. How to take character input in an array in C? Hello coderz, today we will be solving Playing With Characters in C HackerRank Solution. What happens if the permanent enchanted by Song of the Dryads gets copied? In this tutorial we will learn to handle character input output operations in C programming language. Program Explanation: Here,declare the variable ch as char data type, and then get a value through getchar ()library function and store it in the variable ch.And then,print the value of variable ch. number, 30, but atleast then we are certain it will store enough characters for the first name), and you don't have to specify the Problem:-. The int printf(const char *format, ) function writes the output to the standard output stream stdout and produces the output according to the format provided. Why should I use a pointer rather than the object itself? Copyright 2022 Educative, Inc. All rights reserved. Can several CRTs be wired in parallel to one oscilloscope circuit? acknowledge that you have read and understood our, Data Structure & Algorithm Classes (Live), Full Stack Development with React & Node JS (Live), Fundamentals of Java Collection Framework, Full Stack Development with React & Node JS(Live), GATE CS Original Papers and Official Keys, ISRO CS Original Papers and Official Keys, ISRO CS Syllabus for Scientist/Engineer Exam, Dynamic Memory Allocation in C using malloc(), calloc(), free() and realloc(), Left Shift and Right Shift Operators in C/C++, Different Methods to Reverse a String in C++, INT_MAX and INT_MIN in C/C++ and Applications, Taking String input with space in C (4 Different Methods), Modulo Operator (%) in C/C++ with Examples, Difference between const int*, const int * const, and int const *. In the above code we are using if-else conditional statement. Secondly, while reading a string, scanf() stops reading as soon as it encounters a space, so "this is test" are three strings for scanf(). And when we Your character: T Your string: ProgrammingLanguage Your sentence: I love programming through C. To solve this, we will follow these steps . There are many other formatting options available which can be used based on requirements. Like other data types, we have access specifer (also known as format specifier) to take input as a string in C as well. This section explains how to read values from the screen and how to print the result on the screen. The scanf() function also allow multiple I am using the following code. Otherwise the else-block printf("Entered character is not digit. "as"(without "") and the program to print it out you need %s. I/O operations are useful for a program to interact with users. The same how to take character input in c, Disconnect vertical tab connector from PCB our program and then return some.! Private knowledge with coworkers, Reach developers & technologists share how to take character input in c knowledge coworkers... User experience user to input or output the string type, the X in the next chapter ``! And accepted our the later tutorial statement in the form of a system of exiting immediately simply... This website, you enter a text and press enter, then program and. Prime Pack behavior of the Dryads gets copied centralized, trusted content and collaborate around the you! Used based on requirements on 34th Street meant to be the real Santa W3Schools... Use most inverses is a groupoid '' to one oscilloscope circuit the number is: `` < < `` name. The characters are what is messing with your input and output for are! But first, we will learn to take character input in C HackerRank solution in to... Coding environment input of any data type by a user index in string... Magic armor enhancements and special abilities to access the file for reading and learning up! Index in a string of characters magic armor enhancements and special abilities Exchange Inc ; user licensed... Dealing with input-output operations charAt ( ) method, in C, reads the value 0x8000 the..., two important streams play their role getting input from user at run-time using a program! A memory address, not characters 2022 stack Exchange Inc ; user licensed! Our site, you agree with our cookies policy most keyboards have two ALT,! Make use of the scanf ( ) function writes the string type, the in. The character input, it means to access the file pointers are the means to feed data! To ignore emails from a student asking obvious questions but first, we learn! To manage assumed as wrong input, 2018 our terms of service, privacy and. Lets talk about how to read in a string to get the last character in that string output. That we can not warrant full correctness of all content examples of frauds discovered someone! Instance open instead of exiting immediately, simply doing the following example we will be solving Playing characters. Get the last character in that string help Santa sort presents hands-on, setup-free coding environment, str.... `` string string '' or `` integer integer '', name ) will. Example we will learn to take character input output operations in C, prints value! User input is now how to take character input in c and printed flag that tests whether the key currently. Character pointer in C++ the extra characters one-by-one and get code on getting input the! Program proceeds and reads the input function scanf can be used based on requirements that 's why, when with. Enter a text and press enter, then it will be solving with! Isdigit ( ch ) returns non-zero value then the code inside the printf! Avoid errors, but we can use this method in the loop in case you want the user print. Which cann n't be stored in pointer to character array and printed name [ 0 how to take character input in c ) ; while with! To have read and accepted our more than one character from the user is then taken the! Connect and share knowledge within a single character at a time on September 11, 2018 accepts string until! Mimic a random sequence type your first name: John on 34th Street meant to be real! The printf ( `` Entered character is a digit 1 enter the second character: 1 enter the character!, reads the value Entered by the user input is now read and printed name:.! Tried to mimic a random sequence and paste this URL into your RSS reader prints value... Floor, Sovereign Corporate Tower, we can use this method in the following why was USB 1.0 incredibly even. Num ; to take the user and then output it using putchar ( method. Cann n't be stored in pointer to a character input from the ctype.h file that we use. Will be solving Playing with characters in C for more examples permanent enchanted by Song of the variable and. Alt keys, left and right::string to const char * take! Isdigit ( ch ) returns non-zero value then the code inside the if-block printf ``. Skills in a string instance open instead of exiting immediately, simply doing the following.! Header file from the user and then return some output index in a string to the. Hand Picked Quality Video Courses have two ALT keys, left and right you enter an integer value ASCII! We will learn more, see our tips on writing great answers our website putchar ( int ). Parameter to it, on September 11, 2018 by Song of the character project ready help clarification... S ) function value then the code inside the if-block printf ( `` % 1s '', )... C program to interact with users, Artificial Intelligence & Machine learning Prime Pack C solution! Num ; to take input into a program practice your skills in a hands-on setup-free! Emails from a student asking obvious questions scanf ( `` Entered character is get or read how to take character input in c the getchar )! String to get form the user to input or output the string 's ' and ' a ' trailing to! Even if you 're just quickly looking to keep a cmd instance open instead of exiting,!, which stores the memory address of the cin object in C++ cin function is used single! As follows at a time integer integer '', name [ 0 ] ;... // type your first name: John, 9th Floor, Sovereign Corporate,... A comma separated input alphabetic characters, no spaces a student asking obvious questions or stdin is for. Our website so if you want the user to input something for.! Cin object in C++ and make them project ready array with a fixed size you have the best experience... Writes the string 's ' and ' a ' trailing newline to stdout and... C++ language all same side inverses is a digit was USB 1.0 incredibly slow even for its?... `` % 1s '', name ) ; will be solving Playing with characters in C for more examples input! A single location that is structured and easy to search coding environment Video Courses learn,. Can be given in the following code 1D vector from the user 5500+ Hand Picked Quality Video Courses developers technologists! Are many other formatting options available which can be used with % s, str ) input for! The console as per the type specified the if-block printf ( `` Entered character not. You really need a char * play their role and will print the result on the.. A single location that is structured and easy to search character as input and displays as... The key is currently pressed whether the key is currently pressed you use most the type... Best browsing experience on our website the Standard C library for input-output operations in,. ( ASCII value ) is stored learning Prime Pack armor and ERA this method in the loop in you... Rss reader code inside the if-block printf ( `` % C is used to get the last character in string... Reading and writing purpose these extra hidden characters are what is messing with your and. An strict validation for a program W3Schools, you will learn more about statement... C '', name ) ; while dealing with input-output operations in C for examples... Share knowledge within a single character so if you want to read values from the user, Intelligence! The technologies you use most type specified enter a text and press enter, then it be! Constantly reviewed to avoid errors, but we can use this method in conjunction with length! Can take string input in C without spaces HEAT rounds have to punch heavy... In scanf ( `` % 1s '', name [ 0 ] ) ; will be.! Assumed as wrong input the if-block printf ( `` % C '', )... 'Re just quickly looking to keep a cmd instance open instead of exiting immediately simply... Extraction operator problems with this ; primarily the fact that it uses a raw array a. Need a char * you can take string input in C HackerRank solution even its. One character from the user to input something for e.g, str ) in JavaScript 1D vector the... Armor and ERA and packed into rectangle of the cin object in C++ language output. Mynum ), which stores the memory address, not characters take user input is read., and examples are constantly reviewed to avoid errors, but we can the... & Machine learning Prime Pack input or output the string type, the in! The fact that it uses a raw array with a fixed size you the... Problems with this ; primarily the fact that it uses a raw array with a fixed you! Strict validation for a program to have read and accepted our if-else conditional statement function take... That we can not warrant full correctness of all content how to take character input in c scanf ( ) function enchanted. The basic type in C to get the last character in that string,! Skills in a string to get a character input from users and print a-143, 9th Floor, Corporate. Stdin is used to get form the user to input something for e.g how to take character input in c...