Question

06) Write a C program to perform matrix operations based of threads. The program accepts from the user a positive integer N. A menu is given to the user: 1. generate matrices: generates three NxN matrices A, B, C with random integer numbers between 0 and 9 2. add: matrix D- A+B+C 3. subtract: matrix D A-B-C 4. display matrices: A, B, C, D 5. display count of result values more than 8. 6. exit: terminate the program When the operaton is chosen, i Threads will be gencracdlto do the operation where althread i erforms the operation on row i of the three matrices. Moreover, count every D Make sure the threads are running concurrently in a sate manner.The program must handle all possible user or system errors with proper and clear messages and terminates the progr normally a- Show the source file in the report. b- Show the commands used to compile the source file. c- Show a sample run showing all possible mistakes.

Answer 1

#ifndef _HEAD_GUARD_

#define _HEAD_GUARD_

#include <stdlib.h>

#include <stdio.h>

#include <sys/types.h>

#include <pthread.h>

#include <unistd.h>

#endif

typedef struct ds {

   int mat_size;

   int **matrix_fir;

   int **matrix_sec;

int **sum_matrix;

   int count;

} st_thread;

st_thread mat;

int **input_mat(int mat_dimen)

{

   /*definition of local variables*/

   int count_1;

   int count_2;

   int **matrix;

   matrix = (int **)malloc(sizeof (int*) * mat_dimen);

   for (count_1 = 0;count_1 < mat_dimen;count_1++) {

       matrix[count_1] = (int *)malloc(sizeof(int) * mat_dimen);

       for (count_2 = 0;count_2 < mat_dimen;count_2++) {

           (void) fprintf(stdout, "Enter data matrix[%d][%d] : ", count_1, count_2);

           (void) scanf("%d", &matrix[count_1][count_2]);

       }

   }

   return matrix;

}

void create_matrix(st_thread mat;)

{

(void) fprintf(stdout, "\nENTER THE SIZE OF MATRIX:");

   (void) fscanf(stdin, "%d", &(mat.mat_size));

  

   (void) fprintf(stdout, "ENTER THE ELEMENTS OF FIRST MATRIX: \n");

   mat.matrix_fir = input_mat(mat.mat_size);

   (void) fprintf(stdout, "ENTER THE ELEMENTS OF SECOND MATRIX: \n");

   mat.matrix_sec = input_mat(mat.mat_size);

}

void *add_routine(int row)

{

for (int count_1 = 0;count_1 < mat_dimen;count_1++) {

   mat.sum_matrix[row][count_1] = matrix_fir[row][count_1] + matrox_sec[row][count_1];

}

}

void add_mat(int mat_dimen)

{

int **matrix;

pthread_t tid;

for (count_1 = 0;count_1 < mat_dimen;count_1++) {

       matrix[count_1] = (int *)malloc(sizeof(int) * mat_dimen);

for (int count_1 = 0;count_1 < mat_dimen;count_1++) {

pthread_create(&tid, NULL, add_routine(), (void *)&count_1);

}

}

int main(int argc, char *argv[])

{

   /*definition of local variables*/

   pthread_t tid;

int ch;

int **matrix;

   do {

Switch (ch)

{

case 1: create_matrix();
break;
case 2:

add_matrix();

break;
}

printf(“1 to generate the matrices.\n”);

printf(“2 to add the matrices.\n”);

printf(“3 to subtract the matrices.\n”);

printf(“4 to display the matrices.\n”);

printf(“5 ………..n”);

printf(“6 to exit.\n”);

scanf(“%d”, &ch)
} while (ch < 6 && ch >= 1);

  

   for (mat.count = 0;mat.count < mat.mat_size;mat.count++)

       pthread_create(&tid, NULL, subtraction_routine(), (void *)&mat);

   /*terminated successfully*/

   exit(EXIT_SUCCESS);

}

Kindly let me know for any particular functions.