SYNOPSIS
#include <publib.h>
char *strrot13(char *str);
DESCRIPTION
strrot13 converts the argument string using rot13, i.e., it replaces each letter a with n, n with a, b with o, o with b, and so on. Converting twice results in the original string. Non-letter characters are not converted.The rot13 encryption method is used commonly on USENET to hide offensive text, or spoilers in discussions about movies or books, or in other similar occasions.