Pavan M.

Swap Numbers Using Temporary Variable

#include<stdio.h>int main() {      double first, second, temp;      printf("Enter first number: ");      scanf("%lf", &first);      printf("Enter second number: ");      scanf("%lf", &second);      // Value of first is assigned to temp      temp = first;      // Value of second is assigned to first      first = second;      // Value of temp (initial value of first) is assigned to second      second = temp;      printf("\nAfter swapping, firstNumber = %.2lf\n", first);      printf("After swapping, secondNumber = %.2lf", second);      return 0;}

Swap Numbers Without Using Temporary Variables

Swap Numbers Without Using Temporary Variables

#include <stdio.h>int main() {    double a, b;    printf("Enter a: ");    scanf("%lf", &a);    printf("Enter b: ");    scanf("%lf", &b);    // Swapping    // a = (initial_a - initial_b)    a = a - b;        // b = (initial_a - initial_b) + initial_b = initial_a    b = a + b;    // a = initial_a - (initial_a - initial_b) = initial_b    a = b - a;    printf("After swapping, a = %.2lf\n", a);    printf("After swapping, b = %.2lf", b);    return 0;}