Vtech Precomputer Power Pad Plus User Manual download pdf (Page 57)

Example:

PRINT RND (19) press ENTER

You will get a number between 1 and 19. RND (0) will give you a number between 0

and 1.

Note:X cannot be negative.

Important Note: From now on, the ENTER key sign will be deleted for simplicity.

Remember to press the ENTER key after each line of entry.

STRING FUNCTIONS

We can also use functions to act on strings. Take a look at the following:

LEN

This function computes the length of the string argument, which must be in brackets. So

if you type PRINT LEN (“JOHN”) the computer will return the result 4. This is telling

you that there are 4 characters in the string “JOHN”. Blank spaces have the value of

characters. Thus if you put in spaces “J O H N”, it comes out as 7 characters.

STR$

The STR$ function changes a number argument into a string. Take a look at the following

example and see how it works.

Example:

A$=STR$(73)

This is the same as saying A$=“73”.

Here is a sample program.

Type the next example:

10 A$=STR$(7*3)

20 B$=A$+“BIG”

30 PRINT B$

RUN

21BIG

1 2 ... 52 53 54 55 56 57 58 59 60 61 62 ... 87 88

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Vtech Precomputer Power Pad Plus User Manual Page 57