--- hellodiff.c.old	2022-01-14 00:32:46.992523229 -0500
+++ hellodiff.c	2022-01-14 00:32:53.603471532 -0500
@@ -4,7 +4,7 @@
 main()
 {
     printf("The unified diff format is one of the most commonly used formats\n"
-           "to express differences between two versions of a file"
+           "to express differences between two versions of a file\n"
            "Reading and interpreting patches given in this format is a\n"
            "frequent task for any software engineer.\n");
 }