Sudoku Algorithm

// Suduku Algorithm

#include <iostream>

#include <iomanip>

#include <fstream>

using namespace std;

int T[9][9];

//1

class find {

    public: 

void FillAll();

void Fslot(int,int);

};

class check {

 public:

bool checkAll();

bool row(int);

bool col(int);

};

void find::FillAll()

{ for (int i=0; i<9; i++)

  for (int j=0; j<9; j++)

  find::Fslot(i,j);

} 

 

void find::Fslot(int m, int n)

{ int x = 0;

  while(true){

 x++; 

 if ((x!=T[m][0])&&(x!=T[m][1])&&(x!=T[m][2])&&(x!=T[m][3])&&(x!=T[m][4])&&(x!=T[m][5])&&(x!=T[m][6])&&(x!=T[m][7])&&(x!=T[m][8])&&(x!=T[0][n])&&(x!=T[1][n])&&(x!=T[2][n])&&(x!=T[3][n])&&(x!=T[4][n])&&(x!=T[5][n])&&(x!=T[6][n])&&(x!=T[7][n])&&(x!=T[8][n]))

       break; }

     T[m][n] = x; 

}  

 

bool check::checkAll()

{ for (int z=0; z<9; z++)

  { if (!check::row(z))

  return false;

 else if (!check::col(z))

  return false;

  }

return true;}

bool check::row(int m)

{ int sum = 0;

  for ( int i = 0; i < 9; i++ )

  sum = sum + T[m][i];

  if (sum == 45)

  return true;

     else 

        return false;

     } 

     

bool check::col(int n)

{ int sum = 0;

  for ( int i = 0; i < 9; i++ )

  sum = sum + T[i][n];

  if (sum == 45)

  return true;

     else 

        return false;

  }

 

//2

int main ()

{ int v;

  ifstream source;

  source.open("file.txt");

for (int i=0; i<9; i++)

for (int j=0; j<9; j++)

{source >> v;

T[i][j] = v; }

 

//FillAll();

find::FillAll();

if(check::checkAll())

   cout << "YES,DONE\n";

   

for (int x=0; x<9; x++)

{for (int y=0; y<9; y++)

cout << setw(3) << T[x][y];

  cout << endl;}

system ("pause");

return 0;

}