C++で標準出力から得た数値を足し算するだけのもの

sum.cpp

 #include <iostream>
 #include <string>
 #include <vector>
 #include <cstdlib>
 #include <typeinfo>
 using namespace std;

 int main()
 {
     string str;
     vector<int> data(5);
     int sum = 0;
     while (getline(cin, str))
     {
         cout << "[" << str << "]" << endl;
         data.push_back(atoi(str.c_str()));
     }
     cout << "Input finished." << endl;

     for (int i = 0; i < data.size(); ++i) {
         sum += data[i];
     }

     cout << "Sum=" << sum << endl;
     return 0;
 }