Running exe file?

[Rashrashetta]

Hai all,

I just want to ask, after compiling and executing a certain program in
C++, when I try to run the .exe file, it displays the output and close
very fast in a way that I can't read what have been written in the
screen...Why does this happen? and how to fix it?
Thanx alot,
Rashrashetta

[Victor Bazarov]

Rashrashetta wrote:

I just want to ask, after compiling and executing a certain program in
C++, when I try to run the .exe file, it displays the output and close
very fast in a way that I can't read what have been written in the
screen...Why does this happen? and how to fix it?

Put some input at the very end of the 'main' function, which would
stop the program so you can look at the output. I usually do something
like

...
std::cout << "Press Enter..." << std::flush;
std::string dummy;
std::getline(std::cin, dummy);
}

V

[mattsniderppl]

There is probably an error in your program and an exit call. If you do
not have a program with a debugger than can move line by line, then I
would insert some

cout<<"test : did I get here"<<endl;
system("PAUSE");

in key spots throughout your code to find out which line is causing the
program to quit.

[Larry I Smith]

Victor Bazarov wrote:

Rashrashetta wrote:

I just want to ask, after compiling and executing a certain program in
C++, when I try to run the .exe file, it displays the output and close
very fast in a way that I can't read what have been written in the
screen...Why does this happen? and how to fix it?

Put some input at the very end of the 'main' function, which would
stop the program so you can look at the output. I usually do something
like

...
std::cout << "Press Enter..." << std::flush;
std::string dummy;
std::getline(std::cin, dummy);
}

V

Or start a "Command Prompt" and run the program from there perhaps?

Larry

[Ron Wills]

Rashrashetta wrote:

Hai all,

I just want to ask, after compiling and executing a certain program in
C++, when I try to run the .exe file, it displays the output and close
very fast in a way that I can't read what have been written in the
screen...Why does this happen? and how to fix it?
Include a sleep() statement before the output is destroyed.

#include <cstdlib>

int main(int argc, char *argv[]) {
...

std::sleep(5); // Sleep for 5 seconds
return 0;
}


Thanx alot,
Rashrashetta

[Old Wolf]

Ron Wills wrote:

Rashrashetta wrote:

I just want to ask, after compiling and executing a certain program in
C++, when I try to run the .exe file, it displays the output and close
very fast in a way that I can't read what have been written in the
screen...Why does this happen? and how to fix it?

Include a sleep() statement before the output is destroyed.

#include <cstdlib>

int main(int argc, char *argv[]) {
...

std::sleep(5); // Sleep for 5 seconds
return 0;
}

There is no C++ standard function 'sleep' (perhaps you're getting
the POSIX function by that name, if that code works for you).

[Ron Wills]

At 21 Jun 2005 17:15:21 -0700,
Old Wolf wrote:

Ron Wills wrote:

Rashrashetta wrote:

I just want to ask, after compiling and executing a certain program in
C++, when I try to run the .exe file, it displays the output and close
very fast in a way that I can't read what have been written in the
screen...Why does this happen? and how to fix it?

Include a sleep() statement before the output is destroyed.

#include <cstdlib>

int main(int argc, char *argv[]) {
...

std::sleep(5); // Sleep for 5 seconds
return 0;
}

There is no C++ standard function 'sleep' (perhaps you're getting
the POSIX function by that name, if that code works for you).

Opps, looks like your right :P. Just goes to show, never make
assumptions ;). Should be using stdlib.h.

[Zara]

I should propose to put the following lines at the end of main():

std::cout<<"Press a key to end program"<<std::endl;
char dummy;
std::cin.get(dummy);
This will wait for a key press (any key press!) and then exit, and it
is completely portable. Only in case you redirect standar input, you
must take some caution.

[Zara]

Sorry, it won´t work with any key, it still needs the return key to
work.
May I say we are working with the A/C broken (whole day at 30ºC) as an
excuse?

Nice day, not too hot, to all!

[Tim Slattery]

ra*********@hotmail.com (Rashrashetta) wrote:

Hai all,

I just want to ask, after compiling and executing a certain program in
C++, when I try to run the .exe file, it displays the output and close
very fast in a way that I can't read what have been written in the
screen...Why does this happen? and how to fix it?

I'd guess that you're using a Windows OS and you're running the
program by using Start|Run. Instead, open a command console ("DOS
Box"). That should be in your Start menu someplace, try Start|All
Programs|Accessories|Command Prompt. That window will stay open when
your program closes. Unless your program is doing something to clear
the screen before closing, you should be able to see the output.

--
Tim Slattery
Sl********@bls.gov