[C++] Template Function _ Any number of parameters
Template Function _ Any number of parameters
1 #include<iostream>
2 #include<cstdarg>
3 using namespace std;
4
5 template <typename T>
6 T getResult(int count,...)
7 {
8 va_list arg_ptr;// the pointer of arguments list
9 va_start(arg_ptr, count);// begin from arg_ptr , number = count
10 T sum(0);
11 for (int i = 0; i < count; i++)
12 {
13 sum += va_arg(arg_ptr,T);
14 }
15 va_end(arg_ptr);// end
16 return sum;
17 }
18 int main()
19 {
20 cout << getResult<int>(3,3,4,5) << endl;
21 system("pause");
22 }
