When I try use the function itoa(), I get the warning:
implicit declaration of function is invalid in c99.
I have included stdlib.h on my header. I'm trying to call this function inside a function, I'm not sure if this is allowed.
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问题:
回答1:
The problem is that itoa() isn't a standard function.
You should take a look at this link which gives you some alternative implementations
回答2:
An alternative that is commonly used in place of itoa is sprintf/snprintf. These are part of stdio.h.