Given a string text, return how many characters it contains. Spaces and punctuation count. A stringStringA sequence of characters, such as letters, digits, spaces and punctuation, treated as one value. is a sequence of characters, and its length is how many there are. Most languages store that number with the string, but C marks the end with a hidden null terminatorNull TerminatorThe character \0 that C places after the last character of a string to mark where it ends. instead, so counting characters is a real loop there.