Read number from user - C++ STL

C++ examples for STL:string

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Description

Read number from user

Demo Code

#include <iostream>
#include <string>   // Include support for string class.
using namespace std;
bool get_next_num(int *p);
int main()//from   w  w  w.  j  a v a2 s.  com
{
   int sum = 0;
   int n = 0;
   while (get_next_num(&n)) {
      sum += n;
   }
   cout << "The total is: " << sum << endl;
   return 0;
}
bool get_next_num(int *p) {
   string input_line;
   cout << "Enter num (press ENTER to quit): ";
   getline(cin, input_line);
   if (input_line.size() == 0) {
      return false;
   }
   *p = stoi(input_line);
   return true;
}

Result


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