Question

I’m used to the PHP fwrite/fread parameter orders, and i want to make them the same in C++
too.

I want it to work with char and string types, and also any data type i put in it (only if length is defined).

I am total noob on c++, this is what i made so far:
Edit: fixed the std::string &buf

size_t fwrite(FILE *fp, const std::string &buf, const size_t len = SIZE_MAX){
    if(len == SIZE_MAX){
        return fwrite(buf.c_str(), 1, buf.length(), fp);
    }else{
        return fwrite(buf.c_str(), 1, len, fp);
    }
}

size_t fwrite(FILE *fp, const void *buf, const size_t len = SIZE_MAX){
    if(len == SIZE_MAX){
        return fwrite((const char *)buf, 1, strlen((const char *)buf), fp);
    }else{
        return fwrite(buf, 1, len, fp);
    }
}

Should this work just fine? And how should this be done if i wanted to do it the absolutely best possible way?

Answer 1

If you want to write to a file in the best possible way, you should use std::iostreams. Dealing with the length of the buffer manually is a recipe for problems.

Also, the top overload should take a const std::string&, not const std::string.

However, I don’t see any actual bugs.