Programming

Sorry, could you rephrase that?

Ok
the return of pclose() is supposed to be the exit code of the command given to the given pointer to a file descriptor, so here in the code i put in the very top it returns the variable 'pstat', is this equal to the exit number of the given command?

Code:

pid == -1 ? -1 : pstat

is equivalent to

Code:

if(pid == -1) { return(-1); } 
else { return(pstat); }

sorta unrelated question:
if u have an array that not all elements have been put in, and u do a for loop for it, will it crash if it tries to access one of the elements that doesnt have anything in it? If not, is the value equal to NULL ?

Please don't use netspeak. We really discourage it here; and if you know what "you" means, you also know how to spell it!

What do you mean by 'put in'? And what kind of array, anyway? Depends what it is and what you're doing with it. An array of integers may have unpredictable values if you never put anything in it before you used it, but won't crash in of itself. (Of course, the things you do with unexpected numbers may cause it to crash, but that's neither here nor there.) An array of pointers may be full of garbage pointers aimed at nowhere in particular which will crash if you dereference them. Or, worse, they may be pointers to VALID if unintended memory, which will do bizzare unpredictable things instead of crashing.

But in any of these cases it's not the array that's crashing -- it's what you do with the values you find in it.