This tutorial by simplilearn will explain to you about Functions In C With Examples. Functions In C For Beginners tutorial will help you learn c language functions, c language function calling, c language function prototype, functions in c language, c language library functions, c language user-defined functions In C. This C programming tutorial will cover the types of Functions In C.

2. Agenda
What Is Function in C?
Function Definition in C
Function Declaration in C
Types of Functions in C
Categories of a Function

3. What Is Function in C?

4. What Is Function in C?
A function is a set of statements that perform a certain task to generate an output.
Structure of a function:
return_type function_name (list of arg);
{
Body of the function
}

5. Function Definition in C

6. Function Definition in C?
Function definition example:
int product (int a, int b);
{
int c;
c=a*b;
return c
}

7. Function Declaration in C

8. Function Declaration in C
Function declaration is a function prototype that is placed before the main()
Function declaration:
Return_type function_name (parameter list);
Function declaration example:
int product (int , int );
a b

9. Types of Functions in C

10. Types of function
Library
functions
User-defined
functions
Types of Functions in C

11. User-Defined Function in C
#include <stdio.h>
void print();
void main()
{
print();
}
void print()
{
printf("hello world");
}
----------- function prototype
----------- function call
----------- function definition

12. Categories of a Function

13. Different Categories of Function Calling
Function with no argument and no returning value
Function with arguments but no returning value
Function with no arguments and returning value
Function with arguments and returning value