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c++ help

im new to c++ and want to know something about console applications. i used this code:

Code:

#include <iostream> 

using namespace std; 

int main () 
{ 
  cout << "Hello World! "; 
  return 0; 
}

it prints 'hello world' in the dos prompt, but automatically exits straight after. how do i get it to not exit the dos prompt?

ps. im using visual studio 2005

You can ask for input from the user before exiting, or to make it simpler for you as you are learning, put this before "return 0;"

Code:

system("PAUSE");

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PurePhotoshop Forums

This is a fairly common question, take a look at this:
http://c-faq.com/osdep/waitforkey.html

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thanks guys%20:D%20

ok my new code is:

Code:

#include <iostream>
using namespace std;

int main ()
{
  int i;
  cout << "Please enter an integer value: ";
  cin >> i;
  cout << "The value you entered is " << i;
  cout << " and its double is " << i*2 << ".\n";
}

when i hit enter it prints "and double value is" etc. but it instantly exits the program. i removed the return 0; so why does it still do this? i used what you both suggested above but it makes no difference...

What compiler are you using? system("pause"); should work.

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Free-Speed Nation

either than or just put a cin >> i; on the very last line before the return so it will hang until it gets an input before it exits.

Code:

#include <iostream>
using namespace std;

int main ()
{
  int i;
  cout << "Please enter an integer value: ";
  cin >> i;
  cout << "The value you entered is " << i;
  cout << " and its double is " << i*2 << ".\n";
  cout << "\nPlease enter any character and hit enter to exit: ";
  cin >> i;
  return 0;
}

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how do i make it exit when i=='end' and RETURN is pressed. i tired

Code:

f(i=='end'){
     return 0;
}

but that didnt work

Last edited by sapphire, May 22nd, 2006 05:22 PM (Edited 1 times)

Originally posted by sapphire:

how do i make it exit when i=='end' and RETURN is pressed. i tired

Code:

f(i=='end'){
     return 0;
}

but that didnt work

That shouldn't even compile. Use double-quotes ("") for strings and single-quotes ('') for individual characters. I'm not sure how it works in C++, but in C, you need a function to compare strings.

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you can overload operators in c++, But I dont think he was doing that.

You do something like
bool operator==(stuff) then you can compare stuff with a == instead of class.equals(value)

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