A little example of how manipulate matrix with threads in C

README.md

#A little example of how manipulate matrix with threads in C

• compile:

$ gcc -pthread squareMatrixItemsWithThreads.c -o squareMatrixItemsWithThreads

• run

$ ./squareMatrixItemsWithThreads

squareMatrixItemsWithThreads.c

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

void* square(void* arg) {
    int* item = (int*) arg;
    *item *= *item;
}

int main() {
    int i, max = 11, numbers[max];
    pthread_t threads[max];
    for(i = 0; i < max; i++) {
        numbers[i] = i;
        pthread_create(&(threads[i]), NULL, square, &numbers[i]);
    }
    for(i = 0; i < max; i++) {
        pthread_join(threads[i], NULL);
        printf("Number at position %d has value %d\n", i, numbers[i]);
    }
}