Call By Value Swapping

#include <stdio.h>
#include <conio.h>

void swap(int x,int y)

{
     int temp;
     temp = x;
     x=y;
     y=temp;
     printf("swapped values are a= %d and b = %d",x,y);
}

void main()

{
     int a = 7, b = 4;

     swap(a,b);

     printf("Original values are a= %d and b = %d",a,b);

     printf("The values after swap are a = %d,b = %d",a,b);


     getch();
}