Question

Directions: For this lab you will implement the functionality described below. You will do this in one .cpp that will prompt the user with the following format. Ensure that all prompts are preceded by the number for the problem and the word #1 Prompt: #1 Output: #2 Prompt: #2 Output: .#1: Write a program that prompts the user to input 2 numbers. Output the product of these two numbers. #2: Calculate the perimeter of a rectangle. Prompt the user to input the height and width of the rectangle. #3: Calculate the circumference of a circle . Have the user input the radius of the circle. Assume pi = 3.141593, use a named constant to store this value

Answer 1

Code:

#include<iostream>
using namespace std;
int main()
{
   double pi = 3.141593;
   cout << "Enter two numbers: ";
   double a,b;
   cin >> a;
   cin >> b;
   cout << "Product is: " << a*b << endl;
   cout << "Enter Height and Width of the rectangle: ";
   double h,w;
   cin >> h;
   cin >> w;
   //Perimeter of rectangle is 2*(height+width)
   cout << "Perimeter of the rectangle is: " << 2*(h+w) << endl;
   cout << "Enter Radius of the circle: ";
   double r;
   cin >> r;
   //Perimeter of circle is 2*pi*radius
   cout << "Perimeter of the circle is: " << 2*pi*r << endl;
}

output: