What is printf in c

1. What is printf and scanf in C?
2. Why is printf used in C?
3. What is printf in C with example?
4. What is the purpose of printf?
5. What is the syntax of printf?
6. What is void main in C?
7. What is the difference between printf () and scanf ()?
8. What is scanf function?
9. What is main function in C?
10. What kind of function is printf?
11. What is #include Stdio H?
12. What does %d mean in C?
13. Is printf a keyword?
14. Why do we return 0 in C?
15. What is difference between int and void?
16. What does int main () mean in C?

What is printf and scanf in C?

The printf() and scanf() functions are used for input and output in C language. Both functions are inbuilt library functions, defined in stdio. h (header file).

Why is printf used in C?

printf() function:

Printf() function is used to print the “character”, string, float, integer, octal, and hexadecimal values onto the output screen. We use printf() function with a %d format specifier to display the value of an integer variable. ... To generate a newline, we use “\n” in the C printf() statement.

What is printf in C with example?

Example 1: C Output

The printf() is a library function to send formatted output to the screen. The function prints the string inside quotations. To use printf() in our program, we need to include stdio. h header file using the #include <stdio. h> statement.

What is the purpose of printf?

Input/Output

The printf() function sends a formatted string to the standard output (the display). This string can display formatted variables and special control characters, such as new lines ('\n'), backspaces ('\b') and tabspaces ('\t'); these are listed in Table 2.1.

What is the syntax of printf?

Syntax. int printf (const char* c-string, ...); Return Value: If the function successfully executes, it returns the total number of characters written to the standard output. If an error occurs, a negative number is returned.

What is void main in C?

Void main () is the entry point for execution in C program. The void is a keyword that represents function will not return anything but a void value. Main is the name of the function and () represents parameter list that can be passed to function in this case nothing is passed.

What is the difference between printf () and scanf ()?

printf() is for printing the output using the standard output device (Console on the monitor is usually the standard output device), while scanf() is to get input from the standard input device (Keyboard mostly). Scanf will be used to read the user input and Print will be used to write/print the Output.

What is scanf function?

In the C programming language, scanf is a function that reads formatted data from stdin (i.e, the standard input stream, which is usually the keyboard, unless redirected) and then writes the results into the arguments given.

What is main function in C?

A main is a predefined keyword or function in C. It is the first function of every C program that is responsible for starting the execution and termination of the program. It is a special function that always starts executing code from the 'main' having 'int' or 'void' as return data type.

What kind of function is printf?

The printf function (the name comes from “print formatted”) prints a string on the screen using a “format string” that includes the instructions to mix several strings and produce the final string to be printed on the screen.

What is #include Stdio H?

stdio. h is a header file which has the necessary information to include the input/output related functions in our program. Example printf, scanf etc. If we want to use printf or scanf function in our program, we should include the stdio. h header file in our source code.

What does %d mean in C?

In C programming language, %d and %i are format specifiers as where %d specifies the type of variable as decimal and %i specifies the type as integer.

Is printf a keyword?

Note that the name printf is actually not a C keyword and not really part of the C language. It is a standard input/output library pre-defined name.

Why do we return 0 in C?

The main function is generally supposed to return a value and after it returns something it finishes execution. The return 0 means success and returning a non-zero number means failure. Thus we "return 0" at the end of main function.

What is difference between int and void?

The void main() indicates that the main() function will not return any value, but the int main() indicates that the main() can return integer type data. When our program is simple, and it is not going to terminate before reaching the last line of the code, or the code is error free, then we can use the void main().

What does int main () mean in C?

int main – 'int main' means that our function needs to return some integer at the end of the execution and we do so by returning 0 at the end of the program. 0 is the standard for the “successful execution of the program”. ... So, main is equivalent to int main in C89.