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#include <iostream>
#include <iomanip>
#include <string>
using namespace std;
//Symbolic constant for the value of PI
const float PI = 3.14;
//Function Prototypes
int Menu();
int getValue(string, int, int );
float calcSphere(int );
float calcPrism(int, int, int );
float calcCone(int, int );
float calcPyramid(int, int );
int main()
{
int menuChoice, //The users choice from the menu
radius, //The radius for the sphere and cone
length, //The length of the side of the cone, prism, and pyramid
height, //The height of the side of the prism and pyramid
width; //The width of the side of the prism
float surfArea; //The surface area of all of the shapes
//Print the surface areas with 4 digits after the decimal points
cout << fixed << showpoint << setprecision(4);
//Display the menu to the user and get their choice
menuChoice = Menu();
//While the user does not want to quit
while( menuChoice != 5 )
{
//If the user wants to calculate the surface area of a sphere, get the
//radius of the sphere and then display the calculated surface area
if( menuChoice == 1 )
{
radius = getValue( "Enter the radius for the sphere", 1, 10 );
surfArea = calcSphere( radius );
cout << endl << "The surface area of a sphere with radius " << radius
<< " is " << surfArea;
}
//If the user wants to calculate the surface area of a cone, get the
//radius of the base and the length of the side of the cone, and then
//display the calculated surface area
else if ( menuChoice == 2 )
{
radius = getValue( "Enter the radius of the base of the cone", 1, 7 );
length = getValue( "Enter the length of the side of the cone", 1, 12 );
surfArea = calcCone( radius, length );
cout << endl << "The surface area of a cone with radius " << radius
<< " and side length " << length << " is " << surfArea;
}
//If the user wants to calculate the surface area of a prism, get the
//length, width, and height of the side of the prism, and then display
//the calculated surface area
else if ( menuChoice == 3 )
{
length = getValue( "Enter the length of the side of the prism", 1, 20 );
width = getValue( "Enter the width of the side of the prism", 1, 20 );
height = getValue( "Enter the height of the side of the prism", 1, 20 );
surfArea = calcPrism( length, width, height );
cout << endl << "The surface area of the prism with length " << length
<< " width " << width << " and height " << height << " is " << surfArea;
}
//Otherwise, the user wants to calculate the surface area of a pyramid.
//Get the length of the base and the slant height of the pyramid, and
//then display the calculated surface area
else if (menuChoice == 4 )
{
length = getValue( "Enter the length of the base of the pyramid", 1, 10 );
height = getValue( "Enter the slant height of the pyramid", 1, 15 );
surfArea = calcPyramid( length, height );
cout << endl << "The surface area of the pyramid with base " << length
<< " and slant height " << height << " is " << surfArea;
}
//Get another menu choice from the user
menuChoice = Menu();
}
return 0;
}
//********** Code the functions below this line **********
/*********************************************************
Function: Menu
Use: This function asks for the users choice for the menu
(choices 15 in this case).
Arguements: None
Returns: The number entered is the choice on the menu, and
opens up the calculator.
**********************************************************/
int Menu()
{
int menuChoice;
cout << "1. Surface Area of a Sphere\n"
<< "2. Surface Area of a Cone\n"
<< "3. Surface Area of a Prism\n"
<< "4. Surface Area of a Pyramid\n";
cin >> menuChoice;
return 0;
}
/***********************************************************
Function: Get Value
Use: This function asks the user to enter a value into the
calculator between certain guidelines.
Arguements: None
Returns: Whatever calculation is done after entering in the
proper number of values.
***********************************************************/
int getValue(string, int, int)
{
int value;
value = getValue();
return value;
}
/************************************************************
Function: Sphere
Use: Calculates the area of a sphere.
Arguements: Four * value of PI * the radius squared.
Returns: The surface area of a sphere.
************************************************************/
float calcSphere(int radius)
{
float sa;
cout << "Enter in your radius\n";
cin >> radius;
sa = 4 * PI * (radius*radius);
return sa;
}
/*************************************************************
Function: Prism
Use: Calculates the area of a prism.
Arguements: 2 * length * width added three times.
Returns: The surface area of a rectangular prism.
*************************************************************/
float calcPrism(int length, int width, int height)
{
float sa2;
cout << "Enter in your length\n";
cin >> length;
cout << "Enter in your width\n";
cin >> width;
cout << "Enter in your height\n";
cin >> height;
sa2 = (2 * length * width) + (2 * width * height) + (2 * length * height);
return sa2;
}
/**************************************************************
Function: Cone
Use: Calculates the surface area of a cone.
Arguements: PI * radius * length + PI * radius squared.
Returns: The surface area of a cone.
**************************************************************/
float calcCone(int radius, int length)
{
float sa3;
cout << "Enter in your radius\n";
cin >> radius;
cout << "Enter in your length\n";
cin >> length;
sa3 = (PI * radius * length) + (PI * (radius*radius));
return sa3;
}
/**************************************************************
Function: Pyramid
Use: Calculates the surface area of a pyramid.
Arguements: 2 * length * height + length squared.
Returns: The surface area of a pyramid.
**************************************************************/
float calcPyramid(int length, int height)
{
float sa4;
cout << "Enter in your length\n";
cin >> length;
cout << "Enter in your height\n";
cin >> height;
sa4 = (2 * length * height) + (length*length);
return sa4;
}
 