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  1. #include <iostream>
  2. #include <vector>
  3. #include <limits>
  4.  
  5. int main()
  6. {
  7.     const std::vector<int> digits = { 1, 3, 0, 9, 8, 7, 2, 5 } ;
  8.     if( digits.size() > std::numeric_limits<int>::digits10 )
  9.     {
  10.         std::cerr << "possible overflow\n" ;
  11.         return 1 ;
  12.     }
  13.  
  14.     int number = 0 ;
  15.     for( int v : digits )
  16.     {
  17.         if( v<0 || v>9 )
  18.         {
  19.             std::cerr << "invalid decimal digit\n" ;
  20.             return 1 ;
  21.         }
  22.         number *= 10 ;
  23.         number += v ;
  24.     }
  25.     std::cout << number << '\n' ;
  26. }
  27.  
Success #stdin #stdout 0s 3028KB
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https://ideone.com/U3OvAr
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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