在C++中unsigned char to int

Question

我有一个变量unsigned char,它包含一个值,例如40.我想要一个int变量来获取该值.最简单,最有效的方法是什么？非常感谢你.

Answer 1

unsigned char c = 40;
int i = c;

据推测,你的问题肯定要多于......

Answer 2

尝试以下之一,它适合我.如果您需要更具体的演员表,可以查看Boost的lexical_cast和reinterpret_cast.

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

要么:

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