The most common ways cats are exposed to marijuana is by inhaling smoke or ingesting dried marijuana. Although people who have experimented with smoking catnip became happy and relaxed, cats should not be forced to smoke any substance.
File names in Linux were 14 bytes long in earlier Unix version. But The modern Linux system has 255 bytes for file names. As a character requires 1 byte, The length becomes 255 characters. Also the folders are treated as files in Linux system.
This means that your string needs to have space for one more character than the text you want it to contain. That is why Str2 and Str5 need to be eight characters, even though arduino is only seven-the last position is automatically filled with a null character.