Write a Simple C Function Program that prints the Messages i.e Good Morning? & Good Evening!

Statement of C Program: This Program prints the Messages i.e Good Morning? & Good Evening! with the help of Function :

This is the Simplest C Function Program. Functions are the basic building blocks of C Program.

#include<stdio.h>

void msg();                                            /* Function Declaration */

int main()

{

msg();                                                         /* Function Call */

printf(" Good Morning?");

return(0);

}

void msg()                                               /* Function Definition */

{

printf(" Good Evening!");

}

 Output:

 Good Evening!

 Good Morning?

Explanation:

Above, we have defined two Functions- main() and msg(). We have used the word msg at three places in the Program. So Let us understood the meaning of each.

1. 

void msg();

This Function declaration indicates that msg() is a Function which after completing its execution does not return anything. The keyword void is used before the msg() to indicate that it 'does not return anything'.

2.

void msg()

{

printf(" Good Evening");

}

This is Function definition. In this definition we are using only printf(), but we can also use for , switch , if , while etc inside Function definition.

3. 

msg();

The Function msg() is being called by main() i.e main() calls the function msg(). We mean that control passes to the function msg().

                                                                       That's All