add isbn fun

This commit is contained in:
2022-05-24 19:52:01 +02:00
parent 1ef47c6ff5
commit 84450a009a
4 changed files with 117 additions and 0 deletions

View File

@@ -33,6 +33,7 @@ while (true)
if (!int.TryParse(sign, out val))
{
skip = true;
break;
}