Question

C++ Design and implement a program (name it ComputeAreas) that defines four methods as follows: Method squareArea (double side) returns the area of a square. Method rectangleArea (double width, double length) returns the area of a rectangle. Method circleArea (double radius) returns the area of a circle. Method triangleArea (double base, double height) returns the area of a triangle. In the main method, test all methods with different input value read from the user. Document your code and properly label the input prompts and the outputs as shown below. Sample run: Square side: 5.1 Square area: 26.01 Rectangle width: 4.0 Rectangle length: 5.5 Rectangle area: 22.0 Circle radius: 2.5 Circle area: 19.625 Triangle base: 6.4 Triangle height: 3.6 Triangle area: 11.52

Answer 1

SOURCE CODE:

#include <iostream>
using namespace std;
double squareArea(double side) //method to calculate squareArea
{
    return side*side;
}
double rectangleArea (double width, double length) //method to calculate rectangleArea
{
    return width*length;
}
double circleArea (double radius) //method to calculate circleArea
{
    return 3.14*radius*radius;
}
double triangleArea (double base, double height) ////method to calculate triangleArea
{
    return 0.5*base*height;
}
int main()
{
    double side,width,length,radius,base,height; //variables for storing input values
    cout <<"Square side:";
    cin >>side; //reading side from user
    cout <<"Square area: "<<squareArea(side)<<endl; //calling squareArea method
  
    cout <<"Rectangle width:";
    cin >>width; //reading width from user
    cout <<"Rectangle length:";
    cin >>length;//reading length from user
    cout <<"Rectangle area: "<<rectangleArea(width,length)<<endl; //calling rectangleArea method
  
    cout <<"Circle radius:";
    cin >>radius; //reading radius from user
    cout <<"Circle area:"<<circleArea(radius)<<endl; //calling circleArea method
  
    cout <<"Triangle base:";
    cin >>base; //reading base from user
    cout <<"Triangle height:";
    cin >>height; //reading height from user
    cout <<"Triangle area:"<<triangleArea(base,height)<<endl; //calling triangleArea method

    return 0;
}

CODE SCREENSHOT:

OUTPUT: