#include <iostream> //for cout
#include <stdio.h> //for fopen
#include "shell.h"
using namespace std;

int filevar;
//float x,y;

int main()
{
    //cout << "Enter value for x & y:\n" ;
	//cout << "x="; cin >> x;
	//cout << "y="; cin >> y;

	shell();
	FILE * pFile;
	pFile=fopen ("default-rule.txt","r");
	if (pFile==NULL) perror ("Error opening file");
    else {
		do {
			filevar = fgetc (pFile);
			switch (filevar)
			    {
				case 'a': cout << "x+y=" << x+y << "\n"; break;
				case 's': cout << "x-y=" << x-y << "\n"; break;
				case 'q': cout << "x*y=" << x*y << "\n"; break;
				case 'd': cout << "x/y=" << x/y << "\n"; break;

			   };

					} while (filevar != EOF);
					fclose (pFile);

			};

	return 0;
}