Commodore VIC-20 - Page 99

Chapter 3 Programming the VIC 20 Computer 85
90 REM INITIALIZE VARIRBLE )(
100 LET )(=3.24
In statement 100, floating point variable X is
assigned the value 3.24
150 )(=3.24
Equivalent to statement 100 above; the LET is optional
in all assignment statements
215 AS .. "ALSO RAN"
The string variable A$ is assigned the two
text words ALSO RAN
Notice that the first assignment statement (line 100) begins with the
word "LET", but the other two don't. Originally, all assignment statements
had to start with LET. The idea was
that the computer could identify the
type
of statement by looking at the first word. Today, all but a few dialects of
BASIC have dropped this requirement. Although LET is not required by
VIC BASIC, it
is still a reserved word and cannot appear in a variable name.
Here are three statements that assign values to array variable DP$(I),
which
we encountered earlier when describing arrays.
200 REM DP$(I) IS THE DAIRY PRODUCTS SHOPPING LIST VARIABLE
210 DP$(0)="MILK"
220 DP$(1)="CREFlM"
230 DPf(2)="COTTAOE CHEESE"
Remember, you can put more than one statement on a single line. The
three DP$ assignments could be placed
on a single line as follows:
200 REM DP$(I) IS THE DAIRY PRODUCTS SHOPPING LIST VARIABLE
210 DP$(0)="MILK":DP$(1)="CREAM":DP$(2)="COTTAOE CI-IEESE"
A colon must separate adjacent statements appearing on the same line.
Assignment statements can include any
of the arithmetic or relational
operators described earlier in this chapter.
90 REM THIS IS A DUMB WA .... TO ASSION A VALUE TO V
100 V=3.24+7.96/8.5