From 04576dc2a3f761eb041b808b56f13a58052e7655 Mon Sep 17 00:00:00 2001
From: Stefan Zabka <zabkaste@hu-berlin.de>
Date: Sun, 24 May 2020 12:19:52 +0200
Subject: Moved back to 02_exercise

---
 02_exercise/beispiele/fork_signal/fork.c | 39 ++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)
 create mode 100644 02_exercise/beispiele/fork_signal/fork.c

(limited to '02_exercise/beispiele/fork_signal/fork.c')

diff --git a/02_exercise/beispiele/fork_signal/fork.c b/02_exercise/beispiele/fork_signal/fork.c
new file mode 100644
index 0000000..b144577
--- /dev/null
+++ b/02_exercise/beispiele/fork_signal/fork.c
@@ -0,0 +1,39 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+
+int main(int argc, const char* argv[]) {
+	pid_t pid;
+	int h;
+	int count;
+	
+	if (argc < 2) {
+		printf("Usage: ./fork process#\n");
+		return 0;
+	}
+	
+	count = atoi(argv[1]) - 1;
+	printf("Process#: %d\n", count + 1);
+	printf("Parent started\n");
+	
+	pid = 1;
+	for (h = 0; h < count; ++h) {
+		if ((pid = fork()) < 0)
+			printf("fork error\n");
+		else if (pid == 0) {
+			printf("Child %d started\n", h);
+			sleep(1);
+			printf("Child %d finished\n", h);
+			exit(0);
+		}
+	}
+	
+	printf("Parent waiting\n");
+	for (h = 0; h < count; ++h) {
+		wait(NULL);
+	}
+	printf("Parent finished\n");
+	return EXIT_SUCCESS;
+}
-- 
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