how to create a classification table using c++ -

i wondering how possible create classification table using arrays. started code below , stuck on how replace numbers in set range , make equal else. went further detail of mean; commenting in code. hope able give me direction on this.

int main(int argc, _tchar* argv[])  {     vector<vector<double>> arrays = {         { 0.2746458, 0.484255, 0.15154546, 0.0325468},         { 0.141573001, 0.129732453, 0.3524564, 0.000458475}      };  size_t count = 0; double sum = 0; float element = 0;  (const vector<double> &array : arrays) {     (float element : array) {         if (0.0 <= element && element <= 0.24) {             /* part of code should replace number within given range              of 0.0 0.24 , make number equal 1 want              above array end looking this:              { 0.2746458, 0.484255, 1, 1},             { 1, 1, 0.3524564, 1}             */         }         if (0.24 <= element && element <= 0.5) {             /*  part of code meant similar above 1             finds number within range of 0.24 0.5 , make each of              numbers equal 2 array ends looking              { 2, 2, 1, 1},             { 1, 1, 2, 1}             */         }     } }  cout << "classification table " << endl; //print arrays after has gone through above code   return 0; 

}

you can use proxy class. example:

class dynamicvalue {   private:     int c;   public:     dynamicvalue() : c(0) {}     dynamicvalue(double x) : c() { this->c = this->classification(x); }     dynamicvalue(const dynamicvalue& dv) c(dv.c) {}     ~dynamicvalue() {}     dynamicvalue& operator = (double x) {       this->c = this->classification(x);       return *this;     }     dynamicvalue& operator = (const dynamicvalue& dv) {       this->c = dv.c;       return *this;     }     operator int () { return this->c; }     int classification(double x) {       if(x < 0.0) return 0;       else if(x < 0.24) return 1;       else if(x < 0.5) return 2;       else return 3;     } }; 

then can use this:

std::vector<dynamicvalue> values(5); values[0] = 0.3; values[1] = -0.01; values[2] = 0.1; values[3] = 0.63; values[4] = 0.21; for(std::size_t = 0; < values.size(); ++i)   std::cout << (int)values[i] << std::endl; // print 20131