currect code, wrong resault.

[Mreza]

Hi!
my name is reza.
I write this code:

//This program uses switch with char variable.
#include <iostream>
using namespace std;
#include <conio.h>
int main(){
	int n1, n2;
	bool control=true;
	char opt;
	while (control){
		system("cls");
			cout<<"Enter number1 and oporator and number2 :";
		cin>>n1>>opt>>n2;
		switch(opt){
		case '+':
			cout<<"\n"<<n1+n2;
			break;
		case '-':
			cout<<"\n"<<n1-n2;
			break;
		case '*':
			cout<<"\n"<<n1*n2;
			break;
		case '/':
			cout<<"\n"<<n1/n2;
		break;
		default:
			cout<<"\n operation is not legal";}
		getch();
	}
	return 0;}

a blank window opens and nothing happens i cannot type anything inside it. i cannot cose it. after few minutes it closes automaticly.
I amusing:
windows 7.
kaspersky 9.
visual C++ 6.

[PiMaster]

Works fine for me...

I'm using:

Win7
Code::Blocks (IDE)

BTW, you might want to check for division by zero, or the application will fail.