Basic command

UM0715

10/24

Doc ID 15798 Rev 2

GOTO

GOTO executes a jump to another line. The line number is usually a constant, but GOTO x is

supported.

Usage

GOTO numeri0

10 GOTO 100

10 GOTO x

IF...THEN

The IF ... THEN construct allows to make decisions.

If the test condition is true, then control jumps to the line indicated after the THEN keyword. If

false, control passes to the next line. No statements other than a line number may appear after

the THEN keyword, though the form:

IF y < 10 THEN x

is supported .

The relational operators are =, <> (not equal), >, >=, < and <=. They can be applied to strings or

to numerical expressions.

The AND and OR logical operators can also be used.

Usage

IF relational THEN numeric

10 IF x < 10 THEN 100

10 IF a$ <>

NEXT

For description see FOR.

Usage

NEXT id

10 FOR I = 1 TO 10

20 PRINT I

30 NEXT I

REM

This statement is used for adding comments to programs.

It allows multi-line comments, as long as the first character of every continued line is a space.

Usage

REM any comments

10 REM Demonstration program by Malcolm McLean

10 REM This is an extremely long comment, which is spread over

two

10 REM PRINT

.

Table 1.

Basic commands (continued)

Name

Remarks