#include<stdio.h>
void swapnum ( int *var1, int *var2 )
{
int tempnum ;
tempnum = *var1 ;
*var1 = *var2 ;
*var2 = tempnum ;
}
int main( )
{
int num1 = 35, num2 = 45 ;
printf("Before swapping:");
printf("\nnum1 value is %d", num1);
printf("\nnum2 value is %d", num2);
/*calling swap function*/
swapnum( &num1, &num2 );
printf("\nAfter swapping:");
printf("\nnum1 value is %d", num1);
printf("\nnum2 value is %d", num2);
return 0;
}