simple code error

[surikev100]

hello guys..
i'm so new and dumb, and i can't figure out why this is wrong. i did it exactly the way i saw it in the video and it not working. all i get is it pops up, asks me to type a number, but after typing number it goes away rlly quick. but i need it to sqrt that number first and stay there. i thought cin.get() make it stay but it wont let me

#include "stdafx.h"
#include <iostream>
#include <cmath>

int main()
{
	using namespace std;

double num1;
cout << "Pick your number bro..." << endl;
cin >> num1; 
double num2;
num2 = sqrt (num1);
cout << "The square root of " << num1 << " is " << num2 << endl;

	cin.get();
	return 0; 

}

[GRex2595]

I don't remember exactly how this works, but I thought it was just get(). If that doesn't work, and don't count on it working, then try #include <cstdlib> and replace cin.get(); with system("pause");. This is considered by some as bad practice, but you will probably be able to find better ways as you proceed.

EDIT: I believe that the function you are looking for is getch(). I haven't tested it because I use other methods, but that probably works.

[surikev100]

oh so i just replace cin.get(); by getch();?
i never seen that before..what does it do?

[GRex2595]

I can't remember. Try it and find out.

[georgewashere]

add another cin.get() to your code.

what compiler are you using btw? If you are using visual studio you can set a flag (in linker settings?) to let the compiler know that you would like the console to remain open after the return 0; statement.

[Whovian]

I think the problem is the cin.get() is getting your '\n' character when you hit enter. Maybe use another cin.get() (or, more ideally in this case, cin.ignore())?

[Splux]

cin.clear();
cin.ignore(80, '\n');

That should do it.

And "cin.clear" is to clear the stream, so all eventual \n's will be cleared (and any character that might be in the stream).