problem 4

#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, first number = %.2lf\n", first);
    printf("After swapping, second number = %.2lf", second);

    return 0;
}

Enter first number:
Enter second number: