Example :- Program that attempts to swap the values of two numbers.
#include <stdio.h>
void swap( int, int ) ;
void main( )
{
int a, b ;
printf( “Enter two numbers” ) ;
scanf( ” %d %d “, &a, &b ) ;
printf( “a = %d ; b = %d \n”, a, b ) ;
swap( a, b ) ;
printf( “a = %d ; b = %d \n”, a, b ) ;
}
void swap( int , int )//This is original form of declarator
int num1, num2 ;
{
int temp ;
temp = num2 ;
num2 = num1 ;
num1 = temp ;
}
