C Program to Swap Two Numbers

 

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

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

Output:

1 2 3 4 5

Enter first number: 2.50 Enter second number: 5.75   After swapping, firstNumber = 5.75 After swapping, secondNumber = 2.50