Functions for working with strings

Function	Appointment	Description
LCASE$ (symbolic_ locution)	The function returns a character string in which all letters converted to lowercase	CLS READ Word$ PRINT LCASE$(Word$) DATA “THIS IS THE STRING in lower case”
UCASE$ (symbolic_ locution)	The function returns a character value, in which all the letters - uppercase.
LTRIM$ (symbolic_ locution)	Returns a copy of the string with leading spaces removed
RTRIM$ (symbolic_ locution)	Returns a character string formed by removing spaces right
SPACE$ (n)	Returns a string of length n spaces
STRING$ (m, n) STRING$ (m, symbolic_ locution)	Returns a string filled with the symbols of the ASCII - code or data symbol	m - a numeric expression, string length
INSTR ([start, ] line 1, строка 2)	It returns the position of the first occurrence of a substring in the specified line	the n - numeric expression in the range 0-255, the character code - filler
LEFT$(symbolic_ locution, n) RIGHT (symbolic_ locution, n)	Returns a string containing n left / right characters of the original string	symbolic_ locution - specifies the string, the first character which is used to fill lines
MID$ (symbolic_ locution, start [, lenght])	The function returns a fragment of a specified string	Home - an offset from the beginning of the line
STR$ (numeric_ locution выражение)	Returns a character representation of a number or numerical expression
LEN (symbolic_ locution)	Returns the number of characters of the line.

Example: the name of the transformation of the form "Name Last Name" in the form of "Last Name"

CLS

LINE INPUT “Name: “; Nm$

Sposs=INSTR(1, Nm$, “ ”)

IF Sposs=0 THEN

PRINT Nm$ ‘Enter just Surname

ELSE

Surname$=RIGHT$(Nm$, LEN(Nm$)-Sposs)

Firstname$=LEFT$(Nm$, Sposs-1)

PRINT Surname$; “,“; Firstname$

END IF

END

Tasks

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