14 Facts About Character string

In computer programming, a string is traditionally a sequence of characters, either as a literal constant or as some kind of variable.

In formal languages, which are used in mathematical logic and theoretical computer science, a Character string is a finite sequence of symbols that are chosen from a set called an alphabet.

Older Character string implementations were designed to work with repertoire and encoding defined by ASCII, or more recent extensions like the ISO 8859 series.

Term byte string usually indicates a general-purpose string of bytes, rather than strings of only characters, strings of bits, or such.

Length of a string can be stored implicitly by using a special terminating character; often this is the null character, which has all bits zero, a convention used and perpetuated by the popular C programming language.

An example of a null-terminated Character string stored in a 10-byte buffer, along with its ASCII representation as 8-bit hexadecimal numbers is:.

Length of a Character string can be stored explicitly, for example by prefixing the Character string with the length as a byte value.

However, since the implementation is usually hidden, the Character string must be accessed and modified through member functions.

Core data structure in a text editor is the one that manages the string that represents the current state of the file being edited.

In such cases, program code accessing the Character string data requires bounds checking to ensure that it does not inadvertently access or change data outside of the Character string memory limits.

The empty Character string is the unique Character string over S of length 0, and is denoted e or ?.

The empty string e serves as the identity element; for any string s, es = se = s Therefore, the set S and the concatenation operation form a monoid, the free monoid generated by S.

The relation "is a subCharacter string of" defines a partial order on S, the least element of which is the empty Character string.

Reverse of a Character string is a Character string with the same symbols but in reverse order.