text: // Program 82: Program to swap two numbers
  
  #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;
  }
  