Prasanna R

Swap Numbers Using Temporary Variable:

#include 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:

#include 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;

}