[C++] Template Function _ Any number of parameters

Template Function _ Any number of parameters

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

 template <typename T>
 T getResult(int count,...)
 {
     va_list arg_ptr;// the pointer of arguments list
     va_start(arg_ptr, count);// begin from arg_ptr , number = count
     T sum();
     for (int i = ; i < count; i++)
     {
         sum += va_arg(arg_ptr,T);
     }
     va_end(arg_ptr);// end
     return sum;
 }
 int main()
 {
     cout << getResult<int>(,,,) << endl;
     system("pause");
 }