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  1. #include <iostream>
  2. #include <vector>
  3.  
  4. int main()
  5. {
  6.     std::string s = "3+2+1";
  7.     std::vector<int> v;
  8.     for(int i=0;i<s.length();i+=2)
  9.     {
  10.         v.push_back( s[i]-48 );
  11.     }
  12.     std::cout << v.size() << std::endl;
  13.     for( int i : v ) std::cout << i << " ";
  14.     std::cout << std::endl;
  15. }
Success #stdin #stdout 0s 15232KB
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stdin
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Standard input is empty
stdout
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3
3 2 1
https://ideone.com/tqCq8h
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

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