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

The Input / Output functions in C++ are elegantly written and are designed so they are simple to use. In many respects they are a showcase for the object-orientated features in C++.

But you do indeed give up a bit of performance in return, but that's negligible compared to the time taken by your operating system to handle the functions at a lower level.

You can always fall back to the C style functions as they are part of the C++ standard, or perhaps give up portability altogether and use direct calls to your operating system.