Commodore VIC-20 - Page 120

106 The VIC 20 User Guide
Execute this statement in immediate mode. The display will appear as
follows:
?"CURSOR POSITION IS"iPOS(0)
CURSOR POSITION IS 18
The cursor was at character position 18 after displaying CURSOR
POSITION IS. If you add some spaces after IS and before the closing
quotes, you will change the number
18 to a larger number.
INPUT STATEMENT
When an INPUT statement is executed, the computer waits for input
from the keyboard; until the computer receives this input, nothing else will
happen.
An
INPUT statement begins with the word INPUT, which is followed
by a list
of variable names. Entered data is assigned to the named variables.
The variable name type determines the form in which
data must be entered.
A string variable name (ending with a
$) can be satisfied only by text input;
any number
of text characters can be entered for a string variable. To
demonstrate string input, key in the following short program and run it:
10 INPUT A.
20 PRINT fl.
30 OOTO 10
Upon executing an INPUT statement, the computer displays a ques-
tion mark, then waits for your entry. The program illustrated above displays
any text which you enter as you enter it. The text
is also displayed a second
time because
of the PRINT statement on the next line. The first display
occurs when the
INPUT statement on line 10 is executed. The second
display
is in response to the PRINT statement on line 20.
You input integer or floating point numeric data by listing the appro-
priate variable names following INPUT. Separate individual entries with
commas. The comma
is not used for punctuation in an INPUT statement.
The following example inputs a text word,
an integer number, and a floating
point number, then displays these three entries. Enter and run the program.
10 INPUT R',A,A~
20 PRINT A',A,A~
30 OOTO 10