diff --git a/file_operate/create_ps/a.out b/System2/create_ps/a.out
similarity index 100%
rename from file_operate/create_ps/a.out
rename to System2/create_ps/a.out
diff --git a/file_operate/create_ps/main.c b/System2/create_ps/main.c
similarity index 51%
rename from file_operate/create_ps/main.c
rename to System2/create_ps/main.c
index 70a32a0..cd8879a 100644
--- a/file_operate/create_ps/main.c
+++ b/System2/create_ps/main.c
@@ -3,20 +3,31 @@
 #include <sys/types.h>
 #include <unistd.h>
 
-int main() {
+int main()
+{
   pid_t fpid;
 
   fpid = fork();
   // create child process
-  if (fpid < 0) {
-    printf("error in fork!");
-  } else if (fpid == 0) {
+  if (fpid == -1)
+  {
+    perror("perror in fork!");
+    exit(EXIT_FAILURE);
+  }
+
+  if (fpid == 0)
+  {
     printf("I am the child process, my process id is %d\n", getpid());
-    sleep(10);
-  } else {
+    sleep(1);
+    printf("child process DONE\n");
+    exit(EXIT_SUCCESS);
+  }
+  else
+  {
     printf("I am the parent process, my process id is %d\n", getpid());
     wait(NULL);
-    // exit(0);
+    printf("parent process DONE\n");
+    exit(EXIT_SUCCESS);
   }
-  return 0;
+  exit(EXIT_SUCCESS);
 }
diff --git a/file_operate/myls/main.c b/System2/myls/main.c
similarity index 100%
rename from file_operate/myls/main.c
rename to System2/myls/main.c
diff --git a/TP2/tableau/bubbleSort.o b/TP2/tableau/bubbleSort.o
new file mode 100755
index 0000000..356fa3a
Binary files /dev/null and b/TP2/tableau/bubbleSort.o differ
diff --git a/TP2/tableau/quickSort.o b/TP2/tableau/quickSort.o
new file mode 100755
index 0000000..b8ae5ad
Binary files /dev/null and b/TP2/tableau/quickSort.o differ
diff --git a/TP3/List/a.out b/TP3/List/a.out
new file mode 100755
index 0000000..ef75cb2
Binary files /dev/null and b/TP3/List/a.out differ
diff --git a/langage_C.code-workspace b/langage_C.code-workspace
new file mode 100644
index 0000000..362d7c2
--- /dev/null
+++ b/langage_C.code-workspace
@@ -0,0 +1,7 @@
+{
+	"folders": [
+		{
+			"path": "."
+		}
+	]
+}
\ No newline at end of file