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  1. #include <iostream>
  2.  
  3. using namespace std;
  4.  
  5. istream& get_number( istream& is, int& n )
  6. {
  7.   while ( is && !isdigit( static_cast<unsigned char>( is.get() ) ) )
  8.     ;
  9.   is.unget();
  10.   return is >> n;
  11. }
  12.  
  13. int main()
  14. {
  15.   int n;
  16.   while ( get_number( cin, n ) )
  17.     cout << n << ' ';
  18. }
Success #stdin #stdout 0s 4476KB
comments (?)
stdin 
Hello 1234 World 9876 Hello1234
stdout 
1234 9876 1234
https://ideone.com/vrvwgl
language:
C++14 (gcc 8.3)
created:
6 years ago
visibility:
public

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