/*
Simple Calculator
Coded by Eckoro
Revision 0.1
*/

#include <iostream>
#include <cstdlib>

void calculator(), error();
double revision = 0.1;
double num_1, num_2, result;
char selection, operation;

int main()
{
    do {
    system("cls");
    std::cout << "Simple Calculator" << '\n' << "Revision: " << revision << '\n' << '\n';
    std::cout << "Input Option:" << '\n' << "(1) - Calculator" << '\t' << "(2) - Exit Program" << '\n';
    std::cin >> selection;

    switch (selection) {
    case '1' : calculator(); break;
    case '2': break;
    }
    } while (selection != '2');

    system("PAUSE");

}

void calculator()
{
    std::cout << "Format Applies As Such: (number operation number) eg. 2 + 2" << '\n';
    std::cin >> num_1 >> operation >> num_2;

    switch(operation) {
    case '+' : result = num_1 + num_2; break;
    case '-' : result = num_1 - num_2; break;
    case '*' : result = num_1 * num_2; break;
    case '/' : result = num_1 / num_2; break;
        default : error(); break;
    }

    std::cout << result;
}

void error()
{
    std::cout << "Invalid Command Aborting Program" << '\n';}