unsigned char to int in C++

Question

I have a variable unsigned char that contains a value, 40 for example. I want a int variable to get that value. What's the simplest and most efficient way to do that? Thank you very much.

Answer 1

unsigned char c = 40;
int i = c;

Presumably there must be more to your question than that...

Answer 2

Try one of the followings, it works for me. If you need more specific cast, you can check Boost's lexical_cast and reinterpret_cast.

unsigned char c = 40;
int i = static_cast<int>(c);
std::cout << i << std::endl;

or:

unsigned char c = 40;
int i = (int)(c);
std::cout << i << std::endl;