varargs.cpp

来自「C++ sample code, for the book: C++ blac」· C++ 代码 · 共 29 行

#include <iostream>
#include <cstdarg>
using namespace std;

int adder(int...);

int main()
{
    cout << "The sum = " << adder(3, 1, 2, 3) << endl;      

    return 0;
}

int adder(int number ...)
{
    int result = 0;
    va_list list;
    va_start(list, number);
  
    for(int loop_index = 0;loop_index < number; loop_index++){
        int integer = va_arg(list, int);
        result += integer;
    }

    va_end(list);

    return result;
}