Update fork_101.md (#150)

2021-09-15 03:48:49 -07:00
parent 89c8ec68ca
commit 54ad724241
1 changed files with 4 additions and 4 deletions
--- a/exercises/os/fork_101.md
+++ b/exercises/os/fork_101.md
@@ -4,7 +4,7 @@ Answer the questions given the following program (without running it):

 ```
 #include<stdio.h>
-
+#include <unistd.h> 
 int main()
 {
  fork();