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Old 02-16-2005, 08:21 PM   #1
bluknight43
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compiling c++ question


my question is very simple (i hope). I write a program in c++ and compile it with g++ using the command line options "g++ -ansi -Wall test.cpp -o test" now how is it that after I compile without errors the darn thing won't run the program by typing "test" it does nothing. I am asking this because I do the same procedure at my colleges computers and the program executes and I can see output if I made it display output. I am just confused since I have fedora core 3 newest kernal and the college uses redhat 9 with older kernal and g++ version/libraries...
 
Old 02-16-2005, 08:38 PM   #2
Mega Man X
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Try running with "./test" instead of "test". I guess that your test is an executable program, but not executable (sounds dumb, I know... but in Linux, to make a file an executable, you've to use the command "chmod +x file_name" in order to make it executable).

Well, worth a shot I guess
 
Old 02-16-2005, 09:13 PM   #3
Dark_Helmet
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It's just a bad choice for an executable name. There is already a "test" program installed on your machine.

Change the g++ command to create an executable of a different name. Something like:
Code:
g++ -ansi -Wall -o test1 test.cpp
The reason your college computer doesn't behave this way is probably a difference on how the PATH environment variable is set up.

If you get a "command not found" error when you try to run the executable using the new name, then you'll need to preface it with a ./ like Megaman X mentioned:
Code:
./test1
The ./ is required if your working directory is not listed in your PATH.

Last edited by Dark_Helmet; 02-16-2005 at 09:21 PM.
 
Old 02-17-2005, 06:12 AM   #4
bluknight43
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actually that helped a lot, i was only using test in the example but actually my program was called reverse and i was getting command not found and i was a bit puzzled, thanks again
 
  


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