Implement a function interchange() to interchange two values using pointers

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

int main()
{
 // Declaring variable a, b for two values
 int a,b;

 // Inputing values
 printf("Enter first value a : ");
 scanf("%d",&a);

 printf("Enter second value b : ");
 scanf("%d",&b);

 // Printing original value
 printf("Original value : a = %d, b = %d\n",a, b);

 // Calling function interchange
 interchange(&a, &b);

 getch();
 return 0;
}

void interchange(int *x, int *y)

{
 int swap;

 // Interchanging value
 swap=*x;
 *x=*y;
 *y=swap;

 // Printing interchanged value
 printf("Interchanged value : a = %d, b = %d ",*x, *y);
}