C++ project includes File Handling

Use c++ for solving 9x9 sudoku puzzle with 4 algorithms Sudoku puzzles problem is a logic based number puzzle., This study is limited to 1000 sample of (9x9 of Sudoku puzzle), Step for solving puzzle using Boltzmann 1- The open ([login to view URL]) Sudoku 9 by 9 puzzle need to solve. 2- reading all puzzles in the file . 3- Choose algorithms….. Boltzmann 4- determines time like 2 second ……as constraint 5- solve 1000 puzzles using algorithms choose in 3. 6- but time to solve every puzzle into Matlab file (Boltzmann.m) include {put -1 for unsolved puzzle (there is no solution). And -2 for puzzle need more than 2 second to be solved } 7- put the result into text file ([login to view URL] ) contain all solution.