C ++：错误：期望的primary-expression

Question

void add(int register, int& acc)
{
    acc += register;
}

main.cpp:124: error: expected primary-expression before 'register'

wth is wrong right there?

Answer 1

“ register ”是C ++中的关键字（主要是C天的宿醉）

Answer 2

register is a C++ keyword, rename this to something else. It's used to qualify variables as a hint to the compiler to optimize the variable's storage directly to a CPU register rather than RAM - see here .