Sharp MZ-800 - Page 68

Format
Explanation
REM (remark)
REM is a non-executable statement which is specified in a program line to cause
the BASIC interpreter to ignore the remainder of that line. Since REM statements
are non-executable, they may be included at any point in the program without af-
fecting the program’s execution. REM statements are generally used to make a pro-
gram easier to read, or to add explanatory notes to a program.
Example 10 REM *** MZ—800 ***
LET
Format LET <variable> = <expression>
Explanation The LET statement assigns the value (numeric or string) specified by < expression >
to the variable or array element specified by < variable >. As shown in the example
below, LET may be omitted.
Example 10 A=10 10 LET A=10
20 PRINT A 20 PRINT A
30 END 30 END
The two programs above produce exactly the same result.
10 LET N=32
This statement assigns 32 to variable N.
10 LET A=A+5
This statement adds 5 to variable A.
10 LET B$ ="SUNDAY”’
This statement assigns character string ‘‘SUNDAY” to character variable BS.
A=1LCR
This is an example of a command in the direct mode. 1 is assigned to variable A.
The following are examples of incorrect use of the LET statement.
20 LET AS=A+B.............. This is invalid because different types of variables
(string and numeric) have been specified on either
sides of the ‘‘="’ sign.
20 LET LOGILK)=LK+1..... Invalid because the left side of the statement is not
a numeric variable or array element.
6-11