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BASIC-80
Commands
and
Statements
SAVE string
expression
[,A]
10
INPUT
A,B,C
20
PRINT (A + B +
C)/3
30
END
SAVE
"AVER"
OK
RUN
"AVER"
? 5,8,2
5
Ok
STOP
The STOP statement halts program execution and prints a BREAK IN (line number)
message. Following this,
BASIC-80
is
in the command mode. After execution
of
a
STOP, program variables may be changed or printed, and, if the program
is
not
changed, execution may be resumed with the
CONT command. The END statement
also halts execution,
but
does not print a BREAK
IN
(line number) message, and
closes any open file.
STOP
320
PRINT
"END
OF PROGRAM"
330
STOP
RUN
END OF PROGRAM
BREAK
IN
330
Ok
SWAP
The SWAP statement exchanges the values assigned to any two variables or string
variables, provided
that
they are
of
the same type.
SWAP variable1, variable2
110
IF
X>Y THEN SWAP X,Y
120
PRINT
"NEW
VALUE
OF
X
IS";X;""AND
Y
IS
NOW";Y
TRON,
TROFF
The two program tracing commands, TRON
and
TROFF, respectively enable and
disable the trace function in program execution. When enabled, the number of each
line
is
printed as it
is
executed, enclosed in square brackets. These commands can
also be used within programs to selectively enable and disable tracing.
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