VTech E Power User Manual download pdf (Page 58)

VAL

VAL works like STR$ but in reverse. It changes a string argument into a number. Look

at the following short program.

Example:

10 A$=“33”

20 B$=“20”

30 C=VAL(A$+B$)

40 D= VAL (A$) + VAL (B$)

50 PRINT C;D

RUN

3320 53

GRAPHICS FUNCTION

PGET function

Returns the color attribute of a specified pixel.

PGET(X, Y) = n

nReturns

1 the current coordinates(X, Y) turns the pixel status ON

0 the current coordinates(X, Y) turns the pixel status OFF

SUBSTRINGS

It is also possible to get substrings of strings. A substring is a part of a string. For example:

“ABC” is a substring of “ABCDE”. The following three functions operate on substrings.

LEFT$ (A$,N)

This will return the substring from the left-most of string A$, the first character to the Nth

character.

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VTech E Power User Manual Page 58