Hi guys hopefully you can help me THE NOOB, heheh thx, the problem is when i compile it in visual c++ it works great but when i take the application out of thedebug folder and put it onto the floppy and run the application it works but when i type a number an hit enter it exits, anyways here the code

// Circle.cpp
// Circumference of a circle
// Programmer: David R. Quigley
// 3/28/2006

#include <iostream.h>

main()
{
const float PI = 3.14159f; // Declaring PI as a constant floating number
float circumference, radius;

// Asks user for radius
cout << "What is the radius of the circle? ";
cin >> radius;

circumference = 2 * PI * radius; // Formula for circumference of a perfect circle.

// Output The circumference of the circle
cout << "The circle's circumference is ";
cout << circumference << '\n';
return 0;
}

There's no problem with the code. It's just that the program prints the output and then terminates right away. If you want to see the output of the program try running it in command line or put a getchar() before "return 0"
Edit: You also need to include stdio.h to use getchar()

or a bit more c++ like

#inlcude <iostream> // no .h
using namespace std;


.
.
.



char a;
cin>>a;
return 0;
}

how about

system("pause");

its what ive used in the past

Hi Dhaos,

Just put this as the last line:
cin.get();

cin.get() waits for the user to enter a character before it continues.

Greetz BaRa

that not only makes the program system dependant, its also ugly++!

Better use one of the other solutions suggested here.

It's a bad way, read here why: http://faq.cprogramming.com/cgi-bin/smartfaq.cgi?answer=1042856625&id=1043284385. system("pause") also spawns another process.

Note that, if you've just read a value using 'cin >> foo', there'll still be a newline in the input buffer, and cin.get() will return immediately. Add a call to cin.ignore():

float radius;
cin >> radius;
...
cin.ignore(1000, '\n');
cin.get();