Calculations for areas

[joeyt2929]

I'm having trouble with the calculations running correctly for the area of a circle and the area of a square. I don't how to fix it.

#include <iostream>
#include <iomanip>
constexpr auto pi = 3.1415;
using namespace std;

// Function prototypes
char getShapeType();
double getAreaOfRectangle(double, double);
double getAreaOfCircle(double);
double getAreaOfTriangle(double, double);
double getAreaOfSquare(double);


int main()
{
	char shapeType;	 		// R=rectangle, T=triangle, C=circle, S= square
	double areaOfRectangle;		//variable to store the area of rectangle
	double areaOfCircle;		//variable to store the area of circle
	double areaOfTriangle;		//variable to store the area of triangle
	double areaOfSquare;		//variable to store the area of circle

	// Get the shape type.
	shapeType = getShapeType();

	if (shapeType == 'R')
	{
		double width;
		double length;
		do
		{
			cout << "Enter width and length of the rectangle separated by space: ";
			cin >> width >> length;
		} while (width <= 0 || length <= 0);

		areaOfRectangle = getAreaOfRectangle(width, length);
		cout << "The area of the rectangle with width "
			<< width << " and length " << length
			<< " is " << areaOfRectangle << endl;
	}

	if (shapeType == 'C')
	{
		double radius;
		do
		{
			cout << "Enter radius of the circle: ";
			cin >> radius;
		} while (radius <= 0);

		areaOfCircle = getAreaOfCircle(radius);
		cout << "The area of the circle with radius "
			<< radius << 'is' << areaOfCircle << endl;
	}

	if (shapeType == 'T')
	{
		double base;
		double height;
		do
		{
			cout << "Enter base and height of the triangle separated by space: ";
			cin >> base >> height;
		} while (base <= 0 || height <= 0);

		areaOfTriangle = getAreaOfTriangle(base, height);
		cout << "The area of the triangle with base "
			<< base << " and height " << height
			<< " is " << areaOfTriangle << endl;
	}
	
	if (shapeType == 'S')
	{
		double width;
		do
		{
			cout << "Enter width of the square: ";
			cin >> width;
		} while (width <= 0);

		areaOfSquare = getAreaOfSquare(width);
		cout << "The area of the square with width "
			<< width << 'is' << areaOfSquare << endl;
	}

	system("pause");

	return 0;
}
//*********************************************************
// The getShapeType function returns 'C' or 'R' or 'S' or 'T' to      *
// indicate circle or rectangle or square or triangle.                    *
//*********************************************************
char getShapeType()
{
	char type;  // The shape type

	// Get the shape type, R, C, T, S
	cout << "This program will compute area of a shape.\n"
		<< "What is the shape type?\n"
		<< "Circle or Rectangle or Square or Triangle? (C or R or S or T): ";
	cin >> type;

	// Validate the shape type.
	while (type != 'C' && type != 'c' &&
		type != 'R' && type != 'r' && type != 'S' && type != 's'
		&& type != 'T' && type != 't')
	{
		cout << "Please enter C or R or S or T: ";
		cin >> type;
	}

	// Convert lowercase to uppercase.
	if (type == 'c')
		type = 'C';
	else if (type == 'r')
		type = 'R';
	else if (type == 's')
		type = 'S';
	else if (type == 't')
		type = 'T';

	return type;
}

//*****************************************
//Function to calculate the are of rectangle
// Area = width*length
//******************************************
double getAreaOfRectangle(double width, double length)
{
	double area = width * length;

	return area;
}

//*****************************************
//Function to calculate the area of circle 
// Area = pi * r * r 
//******************************************
double getAreaOfCircle(double radius)
{
	double area = pi * radius * radius;

	return area;
}

//*****************************************
//Function to calculate the area of square
// Area = width*width 
//******************************************
double getAreaOfSquare(double width)
{
	double area = width * width;

	return area;
}

//*****************************************
//Function to calculate the area of triangle
//Area = (base * height)/2
//****************************************
double getAreaOfTriangle(double base, double height)
{
	double area = (base * height) / 2;

	return area;
}

[lastchance]

Your compiler WILL tell you the line(s) with an error.

'is' should be " is " on both lines 52 and 82. Those double, rather than single, quotes are actually crucial.

Surprisingly, that may be all that is "wrong", though there are a lot of things that could be drastically shortened.

[saeidsj]

Hi
check your couts in the main the problem is " <<'is' <<"

[joeyt2929]

Thank you and yea I can tell a lot could be shortened. Our professor gave us a template only for the area of a rectangle, so we had to pretty much go off his work.