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  1. #include <iostream>
  2. #include <sstream>
  3. #include <string>
  4. #include <vector>
  5.  
  6. std::string s1 = "[1 -2.5 3;4 5.25 6;7 8 9.12]";
  7.  
  8. std::string cutter(std::string &s){
  9.     std::string res = "";
  10.     for (auto c : s)                                 // Loop over all chars in s
  11.     {
  12.         if (c == ';') res += ' ';                    // Replace ; with space
  13.         else if ((c != '[') && (c != ']')) res += c; // Skip [ and ]
  14.     }
  15.     return res;
  16. }
  17.  
  18. std::vector<float> string_to_floats(std::string &s)
  19. {
  20.       float f;
  21.       std::vector<float> res;
  22.  
  23.       std::stringstream stream(s);        // Create and initialize the stream
  24.       while(1)
  25.       {
  26.           stream >> f;                    // Try to read a float
  27.           if (stream.fail()) return res;  // If it failed, return the result
  28.           res.push_back(f);               // Save the float
  29.       }
  30. }
  31.  
  32. int main()
  33. {
  34.     std::string s2 = cutter(s1);
  35.     std::cout << s2 << std::endl;
  36.  
  37.     std::vector<float> values = string_to_floats(s2);
  38.     std::cout << "Number of floats: " << values.size() << std::endl;
  39.     for (auto f : values) std::cout << f << std::endl;
  40.  
  41.     return 0;
  42. }
Success #stdin #stdout 0s 15240KB
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stdin
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Standard input is empty
stdout
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1 -2.5 3 4 5.25 6 7 8 9.12
Number of floats: 9
1
-2.5
3
4
5.25
6
7
8
9.12
https://ideone.com/tJyYco
language:
C++ (gcc 8.3)
created:
7 years ago
visibility:
public

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