HP 50G, User Manual

Page: 686 / 887

Page 21-39
Press
@@@OK@@@
to cancel message box output. The stack will now look like this:
Including input and output in a message box
We could modify the program so that not only the output, but also the input, is
included in a message box. For the case of program
@@@p@@@
, the modified
program will look like:
«
“
Enter V, T and n:
“
{
“
:V: :T: :n:
“
{2 0} V } INPUT
OBJ
→ →
V T n
«
V
→
STR
“ ”
+ T
→
STR
“ ”
+ n
→
STR
“ ”
+
‘
(8.31451_J/(K*mol))*(n*T/V)
‘
EVAL
“
p
” →
TAG
→
STR + + +
MSGBOX
» »
Notice that you need to add the following piece of code after each of the
variable names V, T, and n, within the sub-program:
→
STR
“ ”
+
To get this piece of code typed in the first time use:
„°
@)TYPE@ @ STR
‚Õ ‚ë ™+
Because the functions for the TYPE menu remain available in the soft menu keys,
for the second and third occurrences of the piece of code (
→
STR
“ ”
+
)
within the sub-program (i.e., after variables T and n, respectively), all you need
to use is:
@ STR
‚Õ ‚ë ™+