[Format]:

P=Asc(X) returns the character code of the first character of the string X.

P=Chr(X) returns the character whose character code is equal to x.

[example]:

( 1)P=Chr(65)

Output the character a, because the ASCII code of a is equal to 65.

(2)P=Asc("A ")

Output 65

2.Len(X): calculate the length of the string X.

[Format]:

P=Len(X)

[description]:

The length of the empty string is 0, and the space character is counted as one character. Although a Chinese character occupies 2 bytes, it is also a word.

[example]:

(1) Make X= "(empty string)

The output result of Len(X) is 0.

(2) let x = "ABCD"

The output of len (x) is 4.

(3) Make X = "VB tutorial "

The output of len (x) is 4.