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Function definition in C programming

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A function definition is a group of statements that is executed when it is called from some point of the program. The general syntax is
return_type function_name (parameter1, parameter2, ....., parametern)
{ - - - - -
statements ;
- - - - -
}

Where,
􀂃 return_type is the data type specifier of data returned by the function.
􀂃 function_name is the identifier by which it will be possible to call the function.
􀂃 Parameters (as many as needed) : Each parameter consists of a data type specifier followed by an identifier like any regular variable declaration. (for eg: int x) and which acts within the function as a regular local variable. They allow to pass arguments to the function when it is called. The different parameters are separated by commas.
ô€‚ƒ Statements is the function’s body. It is a block of statements surrounded by braces{}.
􀂃The first line of the function definition is k/a function header.

#include<stdio.h>
int addition (int a, int b) /* function prototype */
main()
{ int 2 ;
2 = addition (5,3) ; /*function call */
printf (“The result is%d”z) ;
}
int addition(int a, int b) /* function header */
{ int r;
r = a+b
return r;
}
Output:

The result is 8
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