more loops, higher count, use flush

fork.c

@@ -3,25 +3,36 @@
 #include <sys/types.h>
 #include <string.h>
 #include <errno.h>
+#include <sys/wait.h>
+
+#define LOOPS_PER_CHILD 2000
+#define CHILDS 30
 
 int main() {
-    for (int start = 0; start < 50; start += 10) {
+    for (int start = 0; start < LOOPS_PER_CHILD * CHILDS; start += LOOPS_PER_CHILD) {
         pid_t pid = fork();
         if (pid == -1) {
             fprintf(stderr, "Error forking: %s\n", strerror(errno));
             return 1;
         } else if (pid == 0) {
             // I AM FORK!
-            for (int i = start; i < start + 10; i++) {
-                printf("%d: %d\n", pid, i);
+            pid_t childPid = getpid();
+
+            for (int i = start; i < start + LOOPS_PER_CHILD; i++) {
+                fprintf(stdout, "%d: %d\n", childPid, i);
+                fflush(stdout);
             }
-            printf("Fork %d finished counting from %d\n", getpid(), start);
+            printf("Fork %d finished counting from %d\n", childPid, start);
             return 0;
         } else {
             printf("Fork %d successfull\n", pid);
         }
     }
 
+    // wait for all childs to terminate
+    while (wait(NULL) > -1);
+
+    return 0;
 
     fork();
     fork();