Übung2

Merged cars.c from my branch to Übung 2 branch

threads.c

+#include <stdio.h>
+#include <stdlib.h>
+#include <pthread.h>
+#include <unistd.h>
+//Each thread prints one prime number
+//ID of thread shown by pthread_self   
+int primes[11] = { 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31};
+
+void* routine(void* arg) {
+    int index = *(int*)arg;
+    printf("Thread %ld printed prime %d\n",pthread_self(),primes[index]);
+    free(arg);
+}
+
+int main(int argc, char* argv[]) {
+    pthread_t th[11];
+    int i;
+    for (i = 0; i < 11; i++) {
+        int* a = malloc(sizeof(int));
+        *a = i;
+        if (pthread_create(&th[i], NULL, &routine, a) != 0) {
+            perror("Failed to created thread");
+        }
+    }
+    for (i = 0; i < 11; i++) {
+        if (pthread_join(th[i], NULL) != 0) {
+            perror("Failed to join thread");
+        }
+    }
+    
+    return 0;
+}
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