fork download 
  1. //Nicolas Ruano		               CS1A		        	Chapter 4, Pp. 225, #21
  2. //
  3. /******************************************************************************
  4.  *
  5.  * GEOMETRY CALCULATOR
  6.  * ____________________________________________________________________________
  7.  * This program calculates the area of a circle, rectangle, and triangle. 
  8.  * 
  9.  * 
  10.  * FORMULA IS BASED ON THIS CALCULATION:
  11.  * Area of a cirlce = pi * radius^2 
  12.  * Area of rectangle = Base X Height 
  13.  * Area of a triangle = Base * Height * .5 
  14.  * ____________________________________________________________________________
  15.  * INPUT
  16.  * radiusCircle					: The radius of the circle 
  17.  * lengthRectangle	    		: The length of the rectangle 
  18.  * widthRectangle				: The width of the rectangle 
  19.  * baseTriangle 				: The base of the triangle 
  20.  * heightTriangle				: The height of the triangle 
  21.  * 
  22.  * OUTPUT
  23.  * areaOfCircle		    
  24.  * AreaOfRectangle
  25.  * AreaOfTriangle		   
  26. *******************************************************************************/
  27. #include <iostream>
  28. #include <iomanip>
  29. #include <cmath>
  30. using namespace std;
  31.  
  32. int main() {
  33.     int choice; //INPUT - THE CHOICES TO BE MADE  1-4
  34. 	float radiusCircle; //INPUT - THE RADIUS OF THE CIRCLE 
  35. 	float lengthRectangle; //INPUT - THE LENGTH OF THE RECTANGLE
  36. 	float widthRectangle; //INPUT - THE WIDTH OF THE RECTANGLE 
  37. 	float baseTriangle; //INPUT - THE BASE OF THE TRIANGLE 
  38. 	float heightTriangle; //INPUT - THE HEIGHT OF THE TRIANGLE 
  39. 	float areaOfCircle;  //OUTPUT - THE AREA OF THE CIRCLE TO BE COMPUTED 
  40. 	float areaOfRectangle; //OUTPUT - THE AREA OF THE RECTANGEL TO BE COMPUTED
  41. 	float areaOfTriangle; //OUTPUT - THE AREA OF THE TRIANGLE TO BE COMPUTED 
  42.  
  43. //
  44. // Initialize the variables
  45. cout << "Geometry Calculator" << endl;
  46.  cout << "1. Calculate the Area of a Circle" << endl;
  47.  cout << "2. Calcualte the Area of a Rectangle" << endl;
  48.  cout << "3. Calcualte the area of a Triangle" << endl;
  49.  cout << "4. Quit" << endl;
  50.  cin >> choice;
  51.  
  52.  cout << fixed << setprecision(2) << endl;
  53.  if (choice >= 0 and choice <=4) {
  54.  	switch (choice) {
  55.  	case 1:
  56.  		cout << "Please enter the radius of the circle " << endl;
  57.  		cin >> radiusCircle;
  58.  		if (radiusCircle > 0) {
  59.  			areaOfCircle = 3.14159 * (pow(radiusCircle, 2));
  60.  		cout << "The area of the circle is " << areaOfCircle;
  61.  		}
  62.  		else {
  63.  			cout << "Cannot have negative radius " << endl;
  64.  		}
  65.  		break;
  66.  	case 2:
  67.  		cout << "Please enter the length of the rectangle " << endl;
  68.  		cin >> lengthRectangle;
  69.  		if (lengthRectangle < 0 ) {
  70.  			cout << "Cannot have a negative length " << endl;
  71.  		break;
  72.  		}
  73.  
  74.  		cout << "Please enter the width of the rectangle " << endl;
  75.  		cin >> widthRectangle;
  76.  		if (widthRectangle < 0 ) {
  77.  			cout << "Cannot have a negative width " << endl;
  78.  		break;
  79.  		}
  80.  		else {
  81.  			areaOfRectangle = lengthRectangle * widthRectangle;
  82.  			cout << "The area of the of the rectangle is " << areaOfRectangle;
  83.  		}
  84.  		break;
  85.  	case 3:
  86.  		cout << "Please enter the base of the triangle " << endl;
  87.  		cin >> baseTriangle;
  88.  		if (baseTriangle < 0) {
  89.  			cout << "Cannot have a negative base " << endl;
  90.  		break;
  91.  		} 
  92.  		cout << "Please enter the height of the triangle " << endl;
  93.  		cin >> heightTriangle; 
  94.  		if (heightTriangle < 0) {
  95.  			cout << "Cannot have a negative height" << endl;
  96.  		break;
  97.  		}
  98.  		else {
  99.  			areaOfTriangle = baseTriangle * heightTriangle * .5;
  100.  		cout << "The area of the triangle is " << areaOfTriangle << endl;
  101.  		}
  102.  		break;
  103.  	case 4: 
  104.  		cout << "Goodbye" << endl;
  105.  		break;
  106.  
  107.  
  108.  
  109.  }
  110. }
  111. else {
  112. 	cout << "INVALID MENU OPTION " << endl;
  113. }
  114.  
  115.  
  116.  return 0;
  117. }
  118.  
Success #stdin #stdout 0.01s 5320KB
comments (?)
stdin 
Standard input is empty
stdout 
Geometry Calculator
1. Calculate the Area of a Circle
2. Calcualte the Area of a Rectangle
3. Calcualte the area of a Triangle
4. Quit

INVALID MENU OPTION
https://ideone.com/9PjgK1
language:
C++ (gcc 8.3)
created:
2 days ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!