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Download my calculator (beginers,comes with source code!))

learningtocode14 (49)
hey i thought i would give back to the community and share a calculator that can
add,subtract,multiply,divide and find the square root.Keep in mind i am a beginner myself so dont expect it to be top notch!

http://www.mediafire.com/?o8x16kr62q0grb4

I hope this helped you in some way also if your not a beginner could you see the code and improve it and tell me how.

Opean source FTW.
whitenite1 (1785)
@learningtocode14

I liked your calculator program. I especially liked the way you made the menu a routine. I did make a few small changes to your program. for one, it's a lot easier to just add a
\n
for a newline instead of a routine to be called. Two, using
goto
in a program is bad practice, so I made it into a do\while loop. I also added a WaitKey() routine. I hope you're pleased with my changes.
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// Calculator.cpp : Defines the entry point for the console application.
//
#include "stdafx.h" /*used for microsoft visual c++, most compilers dont need this but i do!*/
#include <iostream> /*used for everything else*/
#include <cmath> /* this only for square root*/
#include <windows.h>

using namespace std;

void options(); /*fuction prototype*/
char WaitKey();

int main()
{
	float number,number2;
	int ans;

	do 
	{
	options(); /*the function I made that outputs the options!*/
	
	cout << "Your function choice? : ";

	cin >> ans; /*user input*/

	system("CLS"); /*clears what is on the screen*/

	if(ans == 1)  /*this says that if a person inputs 1 then add*/
	{
	cout << "\nAddition :\n----------";
	
	cout << "\n\nEnter first number: ";
	cin >> number;
	
	cout << "\nEnter secound number: ";
	cin >> number2;
	
	cout << "\n\nAnswer: "<< number + number2 << "\n";
		
	cout << "\nPress 'ENTER' to continue...";
	WaitKey();
	}

	if(ans == 2)
	{
		cout << "\nSubtraction :\n-------------";
	
	cout << "\n\nEnter first number: ";
	
	cin >> number;
	cout << "\nEnter secound number: ";
	
	cin >> number2;
	
	cout << "\n\nAnswer: " << number - number2 << "\n";
	
	cout << "\nPress 'ENTER' to continue...";
	WaitKey();
	}

	if(ans == 3)
	{
		cout << "\nMultiplying :\n-------------";
		
		cout << "\n\nEnter first number: ";
		cin >> number;

		cout << "\nEnter secound number: ";
		cin >> number2;

		cout << "\n\nAnswer: " << number * number2 << "\n";
		
		cout << "\nPress 'ENTER' to continue...";
		WaitKey();
	}

	if(ans == 4)
	{
	cout << "\nDivision :\n----------";
	
	cout << "\n\nEnter First number: ";
	cin >> number;
	
	cout << "\nEnter secound number: ";
	cin >> number2;

	cout << "\n\nAnswer: "<< number / number2 << "\n";
	
	cout << "\nPress 'ENTER' to continue...";
	WaitKey();
	}

	if(ans == 5)
	{
	
	cout << "\nEnter number : ";
	cin >> number;
	
	cout << "\n\nAnswer: " << sqrt(number) << "\n"; /*finds the square root of said number =)*/
	
	cout << "\nPress 'ENTER' to continue...";
	WaitKey();
	}

	if(ans == 6) /*if /person inputs 6 exit program*/
	{
		cout << "\n\nThanks for trying my program.\nPress any key to close..";
		WaitKey();
		return 0;
	}
	
	if(ans < 1 || ans > 6)
	{
		cout << "\nBad choice. Press 'ENTER' to continue...";
		WaitKey();
	}
	//WaitKey();
	system("CLS"); /*clears what is on the screen*/
	} while( ans != 6 );
return 0;
}


void options() /*function, that displays options*/
{
	cout << "1. Addition" << endl << endl;
	cout << "2. Subtraction" << endl << endl;
	cout << "3. Multiply" << endl << endl;
	cout << "4. Division" << endl << endl;
	cout << "5. Square root" << endl << endl;
	cout << "6. End program" << endl << endl;
}

CHAR WaitKey ()
{
  HANDLE hStdin = GetStdHandle (STD_INPUT_HANDLE);
  INPUT_RECORD irInputRecord;
  DWORD dwEventsRead;
  CHAR cChar;

  while(ReadConsoleInputA (hStdin, &irInputRecord, 1, &dwEventsRead)) /* Read key press */
    if (irInputRecord.EventType == KEY_EVENT
	&&irInputRecord.Event.KeyEvent.wVirtualKeyCode != VK_SHIFT
	&&irInputRecord.Event.KeyEvent.wVirtualKeyCode != VK_MENU
	&&irInputRecord.Event.KeyEvent.wVirtualKeyCode != VK_CONTROL)
    {
      cChar = irInputRecord.Event.KeyEvent.uChar.AsciiChar;
	ReadConsoleInputA (hStdin, &irInputRecord , 1, &dwEventsRead); /* Read key release */
	return cChar;
    }
  return EOF;
}


Of course, this program is NOT the best way to program, but it is a jumping off point.
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