Exercise 1

Function Practice Exercise: Rectangle Areas

Create C++ program ex1_area.cpp with the following code in the Visual Studio project or copy the following code into your IDE:

#include <iostream>
using namespace std;

// Function prototypes:

void getValues(double &, double &);

float computeArea(double, double);

void printArea(double);

int main()
{
   float length, width, area;

cout << "This program computes the area of a rectangle." << endl;
   cout << "You will be prompted to enter both the length and width.";
   cout << endl << "Enter a real number (such as 7.88 or 6.3) for each.";
   cout << endl << "The program will then compute and print the area.";
   cout << endl;

// call function getValues(length, width) here
   // call function computeArea(length, width) here
   // call function printArea(area) here

return 0;
}

/*
   Purpose:  To ask the user for the length and width of a rectangle and
             to return these values via the two parameters.
   Return:   Length   The length entered by the user.
             Width    The width entered by the user.
*/

void getValues(double & l, double & w)
{
    // add code to get Length and Width

}

/* Given:  Length   The length of the rectangle.
           Width    The width of the rectangle.
   Purpose:   To compute the area of this rectangle.
   Return: The area in the function name.
*/

double computeArea(doulbe l, double W)
{
    // add code to compute area

}

/* Given:  Area    The area of a rectangle.
   Purpose:   To print Area.
   Return: Nothing.
*/
void printArea(double a)
{
	// add code to print area of the rectangle

}

The purpose of this program is to practice user defined functions. You will complete a reference parameter function, a value returning function, and a value parameter function.

Read the code carefully - there are several mistakes. Correct them to the best of your ability.
Add code to the program to complete it.
Test this C++ program with the inputs suggested in the code.

When you are done:

Take a screenshot of your IDE and console window after compiling and running the program.
For this exercise, you will have: ex1_area.cpp.
Complete all the exercises in this option and upload the .cpp files and the screenshots to URCourses.

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