It
would be more convenient
if
you could simply type in the values for the variables
as
the program is being executed.
The program will be changed so that the value for P, the principal, can be entered
during execution. The values for the other variables will be assigned,
as
before, with
assignment statements.
.
Change line
10
to
10
PRINT
"ENTER
THE
PRINCIPAL";
and insert line
15
15
INPUT
P
List the program to verify that
it
is:
10
PRINT
"ENTER
THE
PRINCIPAL";
15
INPUT
P
20
R = •
12
30
T = 5
40
K = 4
508=
P * (1 + R /
K)h(T
*
K)
60
PRINT
"TOTAL
18
$";
8
Execute the program.
When the program executes, the following message (called a
"prompt")
will be
displayed:
ENTER
THE
PRINCIPAL?
and the computer will wait for you
to
enter the value for P. When a value for P is
entered, for example
5000, the program will execute
as
before
and
print out the total.
Be sure to press
CENTER)
after typing the amount for P.
Here is what the output looks like:
ENTER
THE
PRINCIPAL?
5000
TOTAL
18
$
8030.5561733465
Line
10 prints the prompt message. The semicolon
at
the end
of
the line suppresses
the carriage return
so
that the next character printed will be on the same line.
Line
15 is the INPUT statement. When this statement
is
executed, a question mark
is
printed and the computer will wait for you
to
enter a number from the keyboard. After
you type the number and press
(ENTER),
the number will
be
assigned
to
the variable P
which appears after
INPUT.
The remainder
of
the program
is
the same
as
before.
If
the semicolon is left out in line 10, then the question mark and the number you type
will
be printed on the next line below the prompt.
35
To Next Page
Loading...
