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  1. // Castulo Jason Quintero CSC5 Chapter 4, pg. 225, #21
  2. //
  3. /*******************************************************************************
  4.  * Calculate Area of Selected Shape
  5.  * _____________________________________________________________________________
  6.  * This program will accept user input for a selected shape and computes the
  7.  * area of the shape
  8.  * _____________________________________________________________________________
  9.  * INPUT
  10.  *    menuOption	: User's menu selection
  11.  *    numOne		: First user input value for shape
  12.  *    numTwo		: Second user input value for shape
  13.  *
  14.  * OUTPUT
  15.  *    result  : Calculated area of shape
  16.  ******************************************************************************/
  17.  
  18. #include <iostream>
  19. #include <cmath>
  20. using namespace std;
  21.  
  22. int main() {
  23.     const float pi = 3.14159;      // constant PI
  24.     int menuOption;                // INPUT  - user's menu selection
  25.     float numOne;                  // INPUT  - user input value
  26.     float numTwo;                  // INPUT  - second user input value
  27.     float result;                  // OUTPUT - result of the calculation
  28.  
  29.     //displaying menu options to user
  30.     cout << "Geometry Calcuator\n\n"
  31.     		"1. Calculate the Area of a Circle\n"
  32.             "2. Calculate the Area of a Rectangle\n"
  33.             "3. Calculate the Area of a Triangle\n"
  34.             "4. Quit" << endl;
  35.     cin >> menuOption;
  36.  
  37.     // menu cases depending on option selected by user
  38.     switch (menuOption) {
  39.         case 1:
  40.             cout << "what is the circles radius?: ";
  41.             cin >> numOne;
  42.             result = pi * (powf(numOne, 2));
  43.             cout << "area of the circle is " << result;
  44.             break;
  45.         case 2:
  46.             cout << "\nwhat is the length of the rectangle?: ";
  47.             cin >> numOne;
  48.             cout << "\nwhat is the width of the rectangle?: ";
  49.             cin >> numTwo;
  50.             result = numOne * numTwo;
  51.             cout << "\nthe area of the rectangle is " << result << endl;
  52.             break;
  53.         case 3:
  54.             cout << "\nwhat is the triangles base?: ";
  55.             cin >> numOne;
  56.             cout << "\nwhat is the triangles height?: ";
  57.             cin >> numTwo;
  58.             result = (numOne * numTwo) * .5f;
  59.             cout << "\nthe area of the triangle is " << result << endl;
  60.             break;
  61.         case 4:
  62.             cout << "\nEnd program.";
  63.             break;
  64.         default:
  65.             cout << "\nERROR: invalid entry" << endl;
  66.     }
  67. 	return 0;
  68. }
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Geometry Calcuator

1. Calculate the Area of a Circle
2. Calculate the Area of a Rectangle
3. Calculate the Area of a Triangle
4. Quit

what is the triangles base?: 
what is the triangles height?: 
the area of the triangle is 40
https://ideone.com/79i0UC
language:
C++ (gcc 8.3)
created:
35 days ago
visibility:
public

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