diff --git a/OS/C/Week5/q2 b/OS/C/Week5/q2
new file mode 100755
index 0000000..2ed273f
Binary files /dev/null and b/OS/C/Week5/q2 differ
diff --git a/OS/C/Week5/q2_opt b/OS/C/Week5/q2_opt
new file mode 100755
index 0000000..3464647
Binary files /dev/null and b/OS/C/Week5/q2_opt differ
diff --git a/OS/C/Week5/q2_opt.c b/OS/C/Week5/q2_opt.c
index 317a02b..92f9430 100644
--- a/OS/C/Week5/q2_opt.c
+++ b/OS/C/Week5/q2_opt.c
@@ -8,7 +8,7 @@
 #include <sys/wait.h>
 #include <unistd.h>
 
-void main () {
+int main () {
 
 	// array declaration
 	char *strings[5];
diff --git a/OS/C/Week5/q2opt b/OS/C/Week5/q2opt
index f2352aa..5d2db88 100755
Binary files a/OS/C/Week5/q2opt and b/OS/C/Week5/q2opt differ
diff --git a/OS/C/Week5/q2opt.c b/OS/C/Week5/q2opt.c
index 4ad4a11..88104f1 100644
--- a/OS/C/Week5/q2opt.c
+++ b/OS/C/Week5/q2opt.c
@@ -12,7 +12,18 @@ int compare_strings(const void *a, const void *b) {
 int main(int argc, char *argv[]) {
     pid_t pid = fork();
     if (pid == 0) {
-        qsort(&argv[1], argc - 1, sizeof(char *), compare_strings);
+        int i, j;
+        int count = argc - 1;
+        char **strings = &argv[1];
+        for (i = 0; i < count - 1; i++) {
+            for (j = 0; j < count - i - 1; j++) {
+                if (strcmp(strings[j], strings[j + 1]) > 0) {
+                    char *temp = strings[j];
+                    strings[j] = strings[j + 1];
+                    strings[j + 1] = temp;
+                }
+            }
+        }
         printf("Child Sorted:\n");
         for (int i = 1; i < argc; ++i)
             printf("%s\n", argv[i]);