Thread: why do some programs work on some compliers while others dont?

It does run, but once it finishes, the window closes. Run it from a console window or put something in that takes user input in order to see the results.

Using system() is, in general, not recommended as it opens up some security issues. For little practice and learning programs, it's not a big deal. However, it's better to avoid it now so you don't get into the habit of it later.

Running your program from the command line is the better option. How to do this depends on your OS. Assuming Windows, go to the Start menu, click run. Type 'cmd' and press enter. Go to the directory the program is in and run in from there. The console window will stay open after the program is completed.

Or better yet, open your program through the console.

cd "Documents\programs"
myprog.exe

With suitable replacements for your actual directory and program name.

Originally Posted by indigo0086

put

Code:

System ("PAUSE");

at the end of the file before return 0. This is on the faq.

Since C and C++ are case-sensitive, System is different from system. I think you meant system, with a lowercase s.

[edit] http://faq.cprogramming.com/cgi-bin/...&id=1043284385 [edit]

Simply put

Code:

cin.get()'

before return 0

Code:

cin.get()'

->

Code:

cin.get();

of course.

The FAQ has a more elaborate implementation:

Code:

#include <ios>      // Required for streamsize
#include <iostream>
#include <istream>
#include <limits>   // Required for numeric_limits

void myflush ( std::istream& in )
{
  in.ignore ( std::numeric_limits<std::streamsize>::max(), '\n' );
  in.clear();
}

void mypause() 
{ 
  std::cout<<"Press [Enter] to continue . . .";
  std::cin.get();
} 

int main()
{
  int number;

  // Test with an empty stream
  std::cout<<"Hello, world!\n" ;
  mypause();

  // Leave extra input in the stream
  std::cout<<"Enter more than one character" ;

  myflush ( std::cin );
  mypause();

  std::cin.get();
}

cin.get() is fine when there's nothing in the input buffer; but if there is, you need to get rid of it.

With Code::Blocks you don't have to either.