What is string?
A string is a series of characters represented by bits of code and organized in a single variable. These character string variables, which contain characters, can be set to a specific length or analyzed by a program to determine their length.
In many types of computer programs, character strings are identified by a specific syntax, often including quotation marks, and are set up or dimensioned by various programming commands. These are then used to hold various types of data that represent ASCII characters. In many cases, a single byte represents a character by storing a specific value that corresponds to that character. Different coding conventions can use Unicode or UTF protocols or 'octet' protocols, which identify bytes as operating units.
A string of characters can play many roles in a computer program. For example, a programmer can generate a bare string with an instruction in the load function of a program. A user event can enter data in this string. When the user types in a word or phrase like 'hello world', the program can later read and print that string, display it on the screen, reserve it for memory, and so on.
In modern programming, strings are often involved in data acquisition and data storage functions that hold names or other types of information.