1.LEN
Function: It is used to return the length of a string. It counts the number of characters and returns the number.
Syntax: LEN (string constant/variable)
2.STR$
Function: It is used to convert a number into a string constant.
Syntax: STR$ (Numeric value/variable)
3.VAL
Function: It is used to convert a string into a numeric constant.
Syntax: VAL(String constant/variable)
4.UCASE$
Function: It is used to change a string into upper case characters.
Syntax: UCASE$(string)
5.LCASE$
Function: It is use to change a string into lower case characters.
Syntax: LCASE$(string)
6. LTRIM$ and RTRIM$
Function: The function of LTRIM$ is to trim or cut the leading spaces from a string.The function of RTRIM$ is to trim or cut the following spaces from a string.
Syntax: LTRIM$(string) RTRIM$(string)
7.MID$
Function: It is used to extract specified number of characters from a specified position in the string.
Syntax: MID$ (string, starting position, value)
8.LEFT$
Function: It is used to extract specified number of characters from the left of a given string.
Syntax: LEFT$(string, value)
9.RIGHT$
Function: It is used to extract specified number of characters from the right of a given string.
Syntax: RIGHT$(string, value)
10.ASC
Function: It is used to return the ASCII value of a given character.
Syntax: ASC (character, string, string variable)
11.CHR$
Function: It is used to return the character from a given ASCII number.
Syntax: CHR$ (numeric value)
12.SPACE$
Function: It is used to return the number of spaces
Syntax: SPACE$(value)
13.DATE$
Function: It is used to return current system date.
Syntax: DATE$