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  1. #include <iostream>
  2. #include <string>
  3. using namespace std;
  4.  
  5. int main() {
  6. 	std::string str( "dls?d1:s45;=dd-9m0aA7" );
  7.  
  8.     bool sign = false;
  9.     size_t sum = 0;
  10.  
  11.     for( char c : str )
  12.     {
  13.         if( c == '-' )
  14.             sign = true;
  15.         else
  16.         {
  17.             if( isdigit( c ) )
  18.                 sum += ( c - '0' )*( sign ? -1 : 1 );
  19.  
  20.             sign = false;
  21.         }
  22.     }
  23.  
  24.     std::cout << sum;
  25. 	return 0;
  26. }
Success #stdin #stdout 0s 3460KB
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https://ideone.com/M2QN8o
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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