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  1. #include <iostream>
  2. #include <iomanip>
  3. #include <cmath>
  4. using namespace std;
  5.  
  6. int main() {
  7.     int choice; //INPUT - THE CHOICES TO BE MADE  1-4
  8. 	float radiusCircle; //INPUT - THE RADIUS OF THE CIRCLE 
  9. 	float lengthRectangle; //INPUT - THE LENGTH OF THE RECTANGLE
  10. 	float widthRectangle; //INPUT - THE WIDTH OF THE RECTANGLE 
  11. 	float baseTriangle; //INPUT - THE BASE OF THE TRIANGLE 
  12. 	float heightTriangle; //INPUT - THE HEIGHT OF THE TRIANGLE 
  13. 	float areaOfCircle;  //OUTPUT - THE AREA OF THE CIRCLE TO BE COMPUTED 
  14. 	float areaOfRectangle; //OUTPUT - THE AREA OF THE RECTANGEL TO BE COMPUTED
  15. 	float areaOfTriangle; //OUTPUT - THE AREA OF THE TRIANGLE TO BE COMPUTED 
  16.  
  17. //
  18. // Initialize the variables
  19. cout << "Geometry Calculator" << endl;
  20.  cout << "1. Calculate the Area of a Circle" << endl;
  21.  cout << "2. Calcualte the Area of a Rectangle" << endl;
  22.  cout << "3. Calcualte the area of a Triangle" << endl;
  23.  cout << "4. Quit" << endl;
  24.  cin >> choice;
  25.  
  26.  cout << fixed << setprecision(2) << endl;
  27.  if (choice >= 0 and choice <=4) {
  28.  	switch (choice) {
  29.  	case 1:
  30.  		cout << "Please enter the radius of the circle " << endl;
  31.  		cin >> radiusCircle;
  32.  		if (radiusCircle > 0) {
  33.  			areaOfCircle = 3.14159 * (pow(radiusCircle, 2));
  34.  		cout << "The area of the circle is " << areaOfCircle;
  35.  		}
  36.  		else {
  37.  			cout << "Cannot have negative radius " << endl;
  38.  		}
  39.  		break;
  40.  	case 2:
  41.  		cout << "Please enter the length of the rectangle " << endl;
  42.  		cin >> lengthRectangle;
  43.  		if (lengthRectangle < 0 ) {
  44.  			cout << "Cannot have a negative length " << endl;
  45.  		break;
  46.  		}
  47.  
  48.  		cout << "Please enter the width of the rectangle " << endl;
  49.  		cin >> widthRectangle;
  50.  		if (widthRectangle < 0 ) {
  51.  			cout << "Cannot have a negative width " << endl;
  52.  		break;
  53.  		}
  54.  		else {
  55.  			areaOfRectangle = lengthRectangle * widthRectangle;
  56.  			cout << "The area of the of the rectangle is " << areaOfRectangle;
  57.  		}
  58.  		break;
  59.  	case 3:
  60.  		cout << "Please enter the base of the triangle " << endl;
  61.  		cin >> baseTriangle;
  62.  		if (baseTriangle < 0) {
  63.  			cout << "Cannot have a negative base " << endl;
  64.  		break;
  65.  		} 
  66.  		cout << "Please enter the height of the triangle " << endl;
  67.  		cin >> heightTriangle; 
  68.  		if (heightTriangle < 0) {
  69.  			cout << "Cannot have a negative height" << endl;
  70.  		break;
  71.  		}
  72.  		else {
  73.  			areaOfTriangle = baseTriangle * heightTriangle * .5;
  74.  		cout << "The area of the triangle is " << areaOfTriangle << endl;
  75.  		}
  76.  		break;
  77.  	case 4: 
  78.  		cout << "Goodbye" << endl;
  79.  		break;
  80.  
  81.  
  82.  
  83.  }
  84. }
  85. else {
  86. 	cout << "INVALID MENU OPTION " << endl;
  87. }
  88.  
  89.  
  90.  return 0;
  91. }
  92.  
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/2OF6j5
language:
C++ (gcc 8.3)
created:
2 days ago
visibility:
public

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