Objective: to understand and experiment with thread creation using pthread library in linux. problem statement: design and implement a sudoku solution validator using pthreads library in linux virtual machine. steps: download the incomplete version of hw2.c from icollege read through programming project 1 of chapter 4 in the textbook. follow the suggestion in the textbook to complete the c program in order to check sudoku puzzle using 11 children threads. in addition, you program should meet the following requirement · . the 9x9 data grid to be tested are stored in two txt files, grid1 and grid2, which can be downloaded from icollege o
#include #include #include #define number_of_threads 11 #define puzzle_size 9 void *column_worker(void *param); /* thread that checks columns */ void *row_worker(void *param); /* thread that checks rows */ void *subfield_worker(void *param); /* thread that checks subfields */ /* example puzzle */ int puzzle[puzzle_size+1][puzzle_size+1 ] = { {-1,-1,-1,-1,-1,-1,-1,-1,-1,-1}, {-1,5,3,4,6,7,8,9,1,2}, {-1,6,7,2,1,9,5,3,4,8}, {-1,1,9,8,3,4,2,5,6,7}, {-1,8,5,9,7,6,1,4,2,3}, {-1,4,2,6,8,5,3,7,9,1}, {-1,7,1,3,9,2,4,8,5,6}, {-1,9,6,1,5,3,7,2,8,4}, {-1,2,8,7,4,1,9,6,3,5}, {-1,3,4,5,2,8,6,1,7,9}