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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. struct Matrix {
  5.  
  6.     struct Adder {
  7.         Matrix& m;
  8.         int index;
  9.  
  10.         Adder(Matrix& m) : m(m), index(1) {}
  11.  
  12.         Adder& operator,(float value) {
  13.             m.set(index++, value);
  14.             return *this;
  15.         }
  16.  
  17.     };
  18.  
  19.     void set(int index, float value) {
  20.         cout << "Matrix[" << index << "] = " << value << endl;
  21.     }
  22.  
  23.     Adder operator<<(float value) {
  24.         set(0, value);
  25.         return Adder(*this);
  26.     }
  27.  
  28. };
  29.  
  30.  
  31. int main() {
  32.     Matrix mat;
  33.     mat << 5, 10, 15, 20;
  34.  
  35. }
Success #stdin #stdout 0.01s 2724KB
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stdin
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Standard input is empty
stdout
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Matrix[0] = 5
Matrix[1] = 10
Matrix[2] = 15
Matrix[3] = 20
https://ideone.com/W75LaH
language:
C++ (gcc 8.3)
created:
11 years ago
visibility:
secret

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