Test Programming with C Problem 3

/* Problem 3: Write a program to interchange the contents of two variables. */

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


int main()
{
    int var_a;
    int var_b;
    int temp;
   
    printf("Please input values for variable a:\n");
    scanf("%d", &var_a);
   
    printf("Please input values for variable b:\n");
    scanf("%d", &var_b);
   
    printf("So,\na = %d\nb = %d\n", var_a, var_b);
   
     temp = var_a;
     var_a = var_b;
     var_b = temp;
   
    printf("\nAfter interchange:\na = %d\nb = %d\n", var_a, var_b);
   
    getch();
    return 0;
}