SWAP THE VALUES OF TWO VARIABLES BY USING CALL BY REFERENCE

#include<stdio.h>
#include<conio.h>
int swaping(int*n1, int*n2);
void main()
  {
    int num1, num2;
    clrscr();
    printf("\n Enter any Two Integer Number \n ");
    scanf("%d%d ", &num1,&num2);
    printf("\n Before swaping\n");
    printf("\n Num1=%d and Num2%d", num1, num2);
    swaping(&num1, &num2);
    printf("\n After swaping\n");
    printf("\n Num1=%d Num2=%d ", num1, num2);
    getch();
  }
   int swaping(int*n1, int*n2)
  {
   int temp;
    temp=*n1;
   *n1=*n2;
    *n2=temp;
      getch();
   }