Added author

polyalphabetic-cipher.c

@@ -1,3 +1,5 @@
+// Made by mnjx
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -124,4 +126,4 @@ int main() {
             option = -1;
             break;
     }
-}
+}