update tombstone

Author: jeffszuhay

Chapter05/printLength.c

@@ -1,13 +1,18 @@
 // printLength.c
 // Chapter 5
-// <book title>
+// Learn C Programming
 // 
 // Program to print a length in given meters as well as 
 // in feed (converted from meters). Consideration must be 
 // given to values effectively 1.0 feet but which will never
 // be exactly 1.0 feet -- they'll be more like 1.0000000987 feet,
 // or 1.0 for any practical purpose.
 // We consider 1.0 feet within 4 significant digits.
+//
+// Compile with:
+//
+//    cc printLength.c -o printLength -Wall -Werror -std=c11
+//
 
 
 #include <stdio.h>
@@ -29,4 +34,4 @@ void printLength(  double meters ) {
   printf( "Length = %f %s\n\n" , 
           feet, 
           0.99995 < feet && feet < 1.00005 ? "foot" : "feet" );
-}
+}