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The result is the following message box:
Press
@@@OK@@@
to cancel the message box.
You could use a message box for output from a program by using a tagged
output, converted to a string, as the output string for MSGBOX. To convert
any tagged result, or any algebraic or non-tagged value, to a string, use the
function
→
STR available at
„°
@)TYPE@ @
STR
.
Using a message box for program output
The function
@@@p@@@
, from the last example, can be modified to read:
«
“
Enter V, T and n:
“
{
“
:V:
:T:
:n:
“
{2 0} V }
INPUT OBJ
→
→
V T n
«
V T n
‘
(8.31451_J/(K*mol))*(n*T/V)
‘
EVAL
“
p
”
→
TAG
→
STR MSGBOX
»
»
Store the program back into variable p by using
„
@@@p@@@
. Run the program
by pressing
@@@p@@@
. Enter values of V = 0.01_m^3, T = 300_K, and n =
0.8_mol, when prompted.
As in the earlier version of
@@@p@@@
, before pressing
`
for input, the stack will
look like this:
The first program output is a message box containing the string:
