【学习笔记】C/C++实现变参数函数【？】

请教一位朋友拿到的代码

#include 
#include 
#include 
using namespace std;

template 
void func (initializer_list argList)
{
	vector args = argList;
	cout<< args.size()<< endl;
	if (args.size()>2) cout<< args[2]<< endl;
	for (auto s: args) cout<< s<< ' '; cout<< endl;
}

int main ()
{
	func ({1,2,3,4,5});
	func ({"123","abc"});
	return 0;
}