unfinished calculator thing

//
//  Calculator.cpp
//  CS115Assignment1-2
//
//  Created by Hayden Lueck on 2015-01-15.
//  Copyright (c) 2015 Hayden Lueck. All rights reserved.
//

#include <iostream>
using namespace std;

void calculator();
void scanData(char&, double&);
void doNextOp(char, double);
bool isProperFormat(char, double);
bool isOperator(char);

int main() {
    calculator();
    return 0;
}

void calculator()
{
    double givenValue, result = 0.0;
    char oprtr;
    bool quit = false;
    do
    {
        scanData(oprtr, givenValue);
        if(isProperFormat(oprtr, givenValue) && oprtr != 'q')
        {
            doNextOp(oprtr, givenValue);
        }

        if(oprtr == 'q')
            quit = true;

    }while(!quit);

}

void scanData(char & oprtr, double & givenValue)
{
    cin >> oprtr >> givenValue;

}

void doNextOp(char oprtr, double givenValue)
{
    //TODO add code
}

bool isProperFormat(char character, double value)
{
    //TODO actually put some code here
    return true;
}

bool isOperator(char character)
{
    if(character == '+' ||
       character == '-' ||
       character == '*' ||
       character == '/' ||
       character == '^')
        return true;
    else
        return false;
}