String operator in Pascal - string

Programming is constantly associated with working with some data, in particular with strings. The string operator is specified identically in most languages, including Pascal: string. But Pascal has its own characteristics and properties that you need to know before starting work.

What is the string in Pascal?

Before you understand the syntax of a string data type in Pascal, you should understand what can be a string. In fact, in Pascal, a string is an array of characters, each of which can be any element from an ASCII table. That is, any letter, number, punctuation mark or space can be used as a string.

255 , . , , string. Pascal , .

String. Pascal - 255. , , - string , , . "str", 10 :

var str: string[10].

Pascal string - .

, , . .

( ) . : "+". , , .

, , . , , , , , : " ".

, Pascal, - string compare . :

• (=);
• / (> <);
• (< >);
• (>= <=).

true false.

, . , , , , , , , .

, Pascal , . , , . 4 :

• Copy. - , , :

Copy (S, poz, n) - S - , poz n - .

• , "+", Concat. , :

Concat(s1,s2...).

• Length. - , . - :

Length(str).

• - Pos. , , , 0:

Pos(subS, S).

, Pascal, . , - .

, Delete , , . :

Delete (S, poz, n).

Insert. - , , :

Insert(subS, S, poz).

, . , , string integer. Pascal , , , , . :

• string integer Pascal StrToInt. , .
• , StrToFloat. , , .

• - - FloatToStr IntToStr .
• , , - Str Val. - . , - , , . , , , , , , 0.