C program to swap two variables

➽ Program:-

#include<stdio.h>

int main()

{

    double num1, num2, temp;

    printf("Enter first number: ");

    scanf("%lf", &num1);

    printf("Enter second number: ");

    scanf("%lf", &num2);

   

    temp = num1;

    num1 = num2;

    num2 = temp;

   

    printf("After swapping, firstNumber = %.2lf\n", num1);

    printf("After swapping, secondNumber = %.2lf", num2);

    return 0;

}

➽ Output:-

Enter first number: 7.8

Enter second number: 12.6

After swapping, firstNumber = 12.60

After swapping, secondNumber = 7.80