#include <sys/types.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#define DIMROW 100
#define NUMROWS 20

typedef struct row {
    int vector[DIMROW];
} row;

row matrix[NUMROWS];

int main() {
    int i, j, k, l;
    pid_t pid;
    int *value;
    int total_add;
    total_add = 0;
    // Initializing to 1 all the elements of the vector
    for (i =0; i < NUMROWS; i ++) {
        for (j =0; j < DIMROW; j ++) {
            matrix[i].vector[j] = 1 ;
        }
    }

    for(k = 0; k < NUMROWS; k++){
        pid = fork();
        if(pid == 0){
            for(l = 0; l < DIMROW; l++){
                total_add += matrix[k].vector[l];
            }
            exit(total_add);
        }
    }

    sleep(10);
    while(wait(value) > 0){

        total_add += WEXITSTATUS(*value);
    }
    printf("the total add is %d", total_add);

}