Swap Two Number By Function

#include<stdio.h>
void anik(int *a,int  *b)
{
    int rob;

    rob = *a;
    *a = *b;
    *b = rob;
}
int main()
{
    int x, y;
    printf("Enter x : ");
    scanf("%d", &x);
    printf("Enter y : ");
    scanf("%d", &y);

    anik(&x, &y);

    printf("\nAfter Swapping : \n");
    printf("x : %d\n", x);
    printf("y : %d\n", y);

    return 0;
}