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  1. // Mariah Contreras        CSC5           Chapter 4, P.226, #23
  2. //
  3. /* ************************************************************
  4.  *
  5.  * COMPUTE GEOMETRIC AREAS 
  6.  * ____________________________________________________________
  7.  * This program will display a menu of geometry 
  8.  * calculations. Then based upon the users selction will 
  9.  * compute the area of a specificed shape and display it. 
  10.  * 
  11.  * Computation is based on the formula :
  12.  * Area of a Circle    = PI * (Radius * Radius)
  13.  * Area of a Rectangle = Lenght * Width 
  14.  * Area of a Triangle  = Base * Height * 0.5
  15.  * ____________________________________________________________
  16.  * INPUT
  17.  * choice   : choice on menu 
  18.  *	radius	: Radius of Circle
  19.  *	length	: Length of Rectangle
  20.  *	width	: Width of Rectangle
  21.  *	base	: Base of Triangle
  22.  *  height	: Height of Triangle
  23.  *
  24.  * OUTPUT 
  25.  * area     : Area of choosen shape 
  26.  *
  27.  **************************************************************/
  28. #include <iostream>
  29. #include <iomanip>
  30. using namespace std;
  31. int main ()
  32. {
  33. 	float const PI = 3.14159;	    // CONSTANT - PI
  34. 	int const areaCircle = 1,       // CONSTANT - Menu Choice 1 
  35. 	          areaRectangle = 2,	// CONSTANT - Menu Choice 2 
  36. 	          areaTriangle = 3,     // CONSTANT - Menu Choice 3
  37. 	          quit = 4;             // CONSTANT - Menu Choice 4 
  38. 	int choice;				    	// INPUT - Menu Choice 
  39. 	float radius,			    	// INPUT - Radius of circle
  40. 	      length,			    	// INPUT - Length of Rectangle
  41. 		  width,			    	// INPUT - Width of Rectangle
  42. 		  base, 			    	// INPUT - Base of Triangle
  43. 		  height,			    	// INPUT - Height of Triangle
  44. 		  area;                     // OUTPUT - Area of Choosen Shape 
  45.  // 
  46.  // Display Menu and Prompt User for Choice 
  47.     cout << "Geometry Calculator\n";
  48.     cout << "1. Calculate the Area of a Circle\n";
  49.     cout << "2. Calculate the Area of a Rectangle\n";
  50.     cout << "3. Calculate the Area of a Triangle\n";
  51.     cout << "4. Quit\n";
  52.     cout << "Enter your choice (1-4):";
  53.  // Get Menu Choice and Respond 
  54.     cin >> choice;
  55.         switch (choice)
  56.     {
  57.  // 
  58.  // Area of Circle 
  59.     	case areaCircle:
  60.     		cout << "\nEnter the Radius of the circle";
  61.     		cin >> radius;
  62.     		if (radius > 0) 
  63.     		{
  64.     			area = PI * (radius * radius);
  65.     			cout << "\nThe Area of the Circle: " << area;
  66.     		}
  67.  
  68.     		else 
  69.     		{
  70.     			cout << "\nYou Entered an Invalid Number.Please ";
  71.     			cout << "\nreset the Program and enter a valid number.";
  72.     		}
  73.     		break;
  74.  //
  75.  // Area of Rectangle 
  76.     	case areaRectangle:
  77.     		cout << "\nEnter the length of the rectangle:";
  78.     		cin >> length;
  79.     		cout << "\nEnter the width of the rectangle";
  80.     		cin >> width;
  81.  
  82.     		if (length > 0 && width > 0) 
  83.     		{
  84. 				area = length * width;
  85. 				cout << "\nThe Area of the Rectangle: " << area;
  86.     		}
  87.     		else 
  88.     		{
  89.     			cout << "\nYou entered an invalid number.Please ";
  90.     			cout << "\nreset the program and use valid numbers.";  				
  91.     		}
  92.     		break;
  93. // 
  94. // Area of Triangle 
  95.     	case areaTriangle:
  96.     		cout << "\nEnter the base of the triangle:";
  97.     		cin >> base;
  98.     		cout << "\nEnter the height of the triangle";
  99.     		cin >> height;
  100.     		if (base > 0 && height > 0) 
  101.     		{
  102. 				area = base * height * 0.5;
  103. 				cout << "\nThe Area of the Triangle: " << area;
  104.     		}
  105.     		else 
  106.     		{
  107.     			cout << "\nYou entered an invalid number.Please ";
  108.     			cout << "\nReset the program and use valid numbers.";  				
  109.     		}
  110.     		break;
  111.  // 
  112.  // Quit Program 
  113.     	case quit:
  114.     		cout << "\nYou've ended the program";
  115.     		break;
  116.     	default: cout << "\nMenu input invalid. Please enter a number from 1-4.\n";
  117.     }
  118. 	return 0;
  119. }
Success #stdin #stdout 0.01s 5516KB
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Geometry Calculator
1. Calculate the Area of a Circle
2. Calculate the Area of a Rectangle
3. Calculate the Area of a Triangle
4. Quit
Enter your choice (1-4):
Enter the length of the rectangle:
Enter the width of the rectangle
The Area of the Rectangle: 100
https://ideone.com/FypgY1
Compute Geometric Areas (CH.4, #23)
language:
C++ (gcc 8.3)
created:
1 year ago
visibility:
public

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