swap numbers using call by reference in C program

swap numbers using call by reference in C program

#include
#include
void swaping(int *x, int *y);
int main()
{
 int n1,n2;
 printf("Enter first number (n1) : ");
 scanf("%d",&n1);
 printf("Enter second number (n2) : "); 
 scanf("%d",&n2);
 printf("\nBefore swapping values:");
 printf("\n\tn1=%d \n\tn2=%d",n1,n2);
 swaping(&n1,&n2);
 printf("\nAfter swapping values:");
 printf("\n\tn1=%d \n\tn2=%d",n1,n2);
 getch();
 return 0;
}
void swaping(int *x, int *y)
{
  int z;
  z=*x;
  *x=*y;
  *y=z;
}