C++ 函数传入不同个数的参量

#include <iostream>
#include <cstdarg>

void addSum(int count, ...) {
    va_list args;
    va_start(args, count);
    int sum = 0;
    for(int i = 0; i < count; ++i) {
        int x = va_arg(args, int);
        sum += x;
    }

    std::cout << "Sum = " << sum << std::endl;
    va_end(args);
}

int main() {
    addSum(3, 4, 4, 2);
    addSum(5, 7, 8, 3, 2, 0);
    return 0;
}

• va_start
• va_list
• va_end
• va_arg