Cant figure out how to complete a condition

[Willy Rodriguez]

Hey guys, I have this program thats almost done, but there's one final condition i need to complete before I can run it.
Specifically, im drawing a total blank with lines 5 and 48.
Can someone give a crack at this?

Thanks in advance

#include <iostream>
using namespace std;

int main(){
	double // fill in what's missing here.
	char choice;
	
	do {
		cout << "***** Simple Calculator *****" << endl;
		cout << "  Pick an operation: " << endl;
		cout << "  + to do addition." << endl;
		cout << "  - to do subtraction." << endl;
		cout << "  * to do multiplication." << endl;
		cout << "  / to do division." << endl;
		cout << "  2 to square a number." << endl;
		cout << "  q to quit." << endl;
		cin >> choice;
		
		if (choice == '+' || choice == '-' || choice == '*' || choice == '/') {
			cout << "Enter two numbers: ";
			cin >> num1 >> num2;
			if (choice == '+') {
				result = num1 + num2;
			}
			
			if (choice == '-') {
				result = num1 - num2
			}

			if (choice == '*') {
				result = num1 * num2
			}

			if (choice == '/') {
				result num1 / num2
			}			
			
		}

		if (choice = '2') {
			cout << "Enter a number: ";
			cin >> num1;
			result = num1 * num1;
		}
		if (choice != 'q'){
			cout << num1 << choice << num2 << " = " << result << endl;
		}
	}while ( /* complete this condition */ );
	cout << "Press a key then enter. ";
	cin >> choice;

	return 0;
}

[TheMeerkat]

What do you want the while loop to do? Just keep looping until the person presses q?

Also you need to declare result, num1, num2 as doubles (or floats)

[Willy Rodriguez]

I want the loop to take me back to the calculator portion, Im just not too sure how it is that I take it back to that part. how would I go about that?

[TheMeerkat]

So do you just want an infinite loop?

[Willy Rodriguez]

just about, until the user punches in 'q' and then they're let out

[TheMeerkat]

ah right. so it is what I originally thought.

change double // fill in what's missing here.
to bool exit = false;


and change }while ( /* complete this condition */ );
to }while ( exit ==false );


change

if (choice != 'q'){
			cout << num1 << choice << num2 << " = " << result << endl;
		}

to

if (choice != 'q'){
			cout << num1 << choice << num2 << " = " << result << endl;
                        exit = true;
		}

I hope that should work.
You still have other problems with you code, let me know if you can't figure them out.

[Willy Rodriguez]

Yep, that pretty much solved it, would have never thought to use bool.
Thanks Meerkat!