write a c program to swap two variables using function and pointer (call by reference)

#include<stdio.h>
 void swap(int *num1, int *num2) {
   int temp;
   temp = *num1;
   *num1 = *num2;
   *num2 = temp;
}



main() {
   int num1, num2;
   printf("nEnter the first number : ");
   scanf("%d", &num1);
   printf("nEnter the Second number : ");
   scanf("%d", &num2);
   swap(&num1, &num2);
   printf("nFirst number  : %d", num1);
   printf("nSecond number : %d", num2);
 getch();
}