In C++, am I paying for what I am not eating?

Question

Let\'s consider the following hello world examples in C and C++:

main.c

#include 

int main()
{
    printf(\"Hello world\\n\");
    r         


        

Answer 1

So, in this case, what am I paying for?

std::cout is more powerful and complicated than printf. It supports things like locales, stateful formatting flags, and more.

If you don't need those, use std::printf or std::puts - they're available in .

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It is famous that in C++ you pay for what you eat.

I also want to make it clear that C++ != The C++ Standard Library. The Standard Library is supposed to be general-purpose and "fast enough", but it will often be slower than a specialized implementation of what you need.

On the other hand, the C++ language strives to make it possible to write code without paying unnecessary extra hidden costs (e.g. opt-in virtual, no garbage collection).