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  1. #include <iostream>                                                                                 
  2. #include <vector>                                                                                   
  3. #include <sstream>                                                                                  
  4. #include <iomanip>                                                                                  
  5.  
  6. using namespace std;                                                                                
  7.  
  8.  
  9. int main(int, char**){                                                                                 
  10.  
  11.   vector<float> three_floats{1.2f, 4.5f, -0.5f};                                                       
  12.   vector<char> storage;                                                                                
  13.   storage.reserve(sizeof(float)*three_floats.size());                                                  
  14.  
  15.   for(auto number: three_floats){                                                                      
  16.     cout << "Storing: " << number << "\n";                                                             
  17.     for(int i = 0; i < sizeof(float); ++i){                                                            
  18.       storage.push_back(reinterpret_cast<char*>(&number)[i]);                                          
  19.     }                                                                                                  
  20.   }                                                                                                    
  21.  
  22.   string str(storage.begin(), storage.end());                                                          
  23.  
  24.   cout << "str len " << str.length() << "\n";                                                          
  25.  
  26.  
  27.   for(int i = 0;  i < str.size(); i+=sizeof(float)){                                                   
  28.     cout << "Reading " << *reinterpret_cast<float*>(&storage[i]) << "\n";                              
  29.   }                                                                                                    
  30.  
  31. }
Success #stdin #stdout 0s 3032KB
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stdin
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Standard input is empty
stdout
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Storing: 1.2
Storing: 4.5
Storing: -0.5
str len 12
Reading 1.2
Reading 4.5
Reading -0.5
https://ideone.com/FLce6y
language:
C++14 (gcc 8.3)
created:
12 years ago
visibility:
public

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