#include <pthread.h>
#include <stdlib.h>
#include <stdio.h>

struct v
{
 int i ; /* row */
 int j ; /* column */
};

#define NUM_THREADS 10

#define M 3
#define K 2
#define N 3
int A [M] [K] = {{1,4}, {2,5}, {3,6}};
int B [K] [N] = {{8,7,6}, {5,4,3}};
int C [M] [N] ;

void *runner(void *param);

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

	pthread_t workers[NUM_THREADS];
	for (int i = 0; i < M; i++){
		for (int j = 0; j < N; j++ ){
			struct v *data = (struct v *) malloc (sizeof (struct v)) ;
			data->i = i;
			data->j = j;
			pthread_create(&workers[j + M*i], NULL, runner, data);
			//pthread_join(workers[i], NULL);
		}
	}

	for (int i = 0; i < NUM_THREADS; i++)
 		pthread_join(workers[i], NULL);


	for(int i = 0; i < M; ++i){
		for(int j = 0; j < N; ++j)
			printf("%d ",C[i][j]);
		printf("\n");
	}

	return 0;

}

void *runner(void *param){
	struct v *data = (struct v *)param;


	for(int x = 0; x < K; ++x)
		C[data->i][data->j] += A[data->i][x] * B[x][data->j];

	pthread_exit(0);

}