Gantor calculator

[code]
/*
Title - C++ Console Calculator
Author - GANTOR
Version - 1
Description - A simple calculator that adds, subtracts, divides, multiplies, and uses square roots
of the user's two numbers
*/


#include <cmath>
// <cmath> is the C++ standard library that allows us
// to use operators and other mathematical
// functions. It MUST be included
#include <iostream>

using namespace std;

int main()
{
    system ("COLOR 4a");
    // most novice or even advanced programmers are unaware
    // of this lively trick. "COLOR " declares the system 
    // function of adding color. d8, is a color combination.
    // other combinations can be found by opening up the
    // comand prompt, and typing: color tree
    double firstNumber, secondNumber;
    // double is the variable we are using instead 
    // of int or string. This is because double
    // allows use of decimals and longer integers - like float
    char userChoice;
    // here we define the character variable the user will enter when choosing which operator he will use
    for (;;) {
        do {
            // these are the functions that allow us to use integers in our different cases.
            // this is very similar to if and else if, but must require a closing while statement.
    cout << "\t\t\tGANTOR's C++ Console Calculator\n\n\n";
    // \t tells the IDE to tab the content - in this case 3 times.
    // \n means newline. It is similar to endl, but to me, easier
    cout << "\tChoose the operator you would like to use\n\n";
    // they will choose from, as you know, add, subtract, divide, multiply, and even square root
    cout << "1. Addition\n";
    cout << "2. Subtraction\n";
    cout << "3. Division\n";
    cout << "4. Multiplication\n";
    cout << "5. Radifications\n";
    cout << "Press Q to quit\n\n";
    cout << "\tEnter your number here: ";
    cin >> userChoice;
} while ( userChoice < '1' || userChoice > '6' && userChoice != 'Q');
// this is our closing while loop. It basically says, that if the user's input is less than 1,
// or greater thann 6, and equals Q, then do the following
if (userChoice == 'Q') break;
// break tells the IDE or compiler to either return to the opening page, or in our case, close the program

switch (userChoice) {
       // the switch statement allows us to tell the program what the different cases are
case '1':
     // Addition
     system ("CLS");
     // this function tells the program to clear the current screen, and produce what we want
     cout << "\t\t\t\tAddition\n\n\n";
     cout << "\t\tENTER A NUMBER: ";
     cin >> firstNumber;
     // here the user will enter the first number; the second number will be added
     cout << "\n\n\t\tENTER ANOTHER NUMBER: ";
     cin >> secondNumber;
     cout << firstNumber + secondNumber;
     cout << "\n\n\n\t\t\t";
     // here it states the answer
     system ("PAUSE");
     system ("CLS");
     break;
     // this tells our program to return to the main menu
     
     case '2':
          // Subtraction
          system ("CLS");
          cout << "\t\t\t\tSubtraction\n\n\n";
          cout << "\t\tENTER A NUMBER: ";
          cin >> firstNumber;
          cout << "\n\n\t\tENTER ANOTHER NUMBER: ";
          cin >> secondNumber;
          cout << firstNumber - secondNumber;
          cout << "\n\n\n\t\t\t";
          system ("PAUSE");
          system ("CLS");
          break;
          
     case '3':
          // Division
          system ("CLS");
          cout << "\t\t\t\tDivision\n\n\n";
          cout << "\t\tENTER A NUMBER: ";
          cin >> firstNumber;
          cout << "\n\n\t\tENTER ANOTHER NUMBER: ";
          cin >> secondNumber;
          cout << firstNumber / secondNumber;
          // in the <cmath> library, division = /
          cout << "\n\n\n\t\t\t";
          system ("PAUSE");
          system ("CLS");
          break;
          
     case '4':
          // Multiplication
          system ("CLS");
          cout << "\t\t\t\tMultiplication\n\n\n";
          cout << "\t\tENTER A NUMBER: ";
          cin >> firstNumber;
          cout << "\n\n\t\tENTER ANOTHER NUMBER: ";
          cin >> secondNumber;
          cout << (firstNumber) * (secondNumber);
          cout << "\n\n\n\t\t\t";
          system ("PAUSE");
          system ("CLS");
          break;
          
          
      case '5':
           //Radifications
           system ("CLS");
           cout << "\t\t\t\tRadifications\n\n\n";
           cout << "\t\tENTER A NUMBER: ";
           cin >> firstNumber;
           cout << sqrt (firstNumber);
           cout << "\n\n\n\t\t\t";
           system ("PAUSE");
           system ("CLS");
           break;
           }
           }
           return 0;
           //  this tells the program to close
           }      
           
           
           /*
           
           To whom it may concern,
           
           Thanks for downloading!!
           
           -GANTOR
           */
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