How do you copy a file?

How do you know if your code is portable or not? For example will the function rename in stdio.h work on always?

"How do you copy a file?"
"How do you know if your code is portable or not?"

I knew I shouldn't have eaten that expired ham.

Yes, the functions in the standard library will be the same. They are the C++ standard.

So anything from the standard library is portable?

Quote:

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Originally Posted by c_weed

So anything from the standard library is portable?

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Yes, with two caveats:
1. Compilers and standard library implementations have bugs.
2. A freestanding implementation (e.g., pertaining to an embedded system) is only required to provide a certain subset of the C++ standard library. Beyond that, what is provided is implementation defined.

O_o

I'm not trying to scare you away from standard functions, but be aware though that not all implementations are created equally.

See `strtok' and `ungetc' functions that vary widely in how well they do what they are supposed to do.

Soma