Homework Clarification: Character Strings

Question

We have to implement a map, instruction reads: " The key for each entry is unique. The key for each entry is a character string. "

So is the key a char or String or an array of char ?

Answer 1

It should be a string. It is impossible to be a 'char' since 'char' cannot represent any string. In case of array of 'char', it should be clearly stated.

Answer 2

A character string is a series of characters represented by bits of code and organized into a single variable. This string variable holding characters can be set to a specific length or analyzed by a program to identify its length.

I think this quote can clarify your question, it should be a String