I am making a program to display a line of text. The calc will run a loop displaying a temp. message until a key is clicked. When a key is clicked, the letter associated to the button will be added to a string. The calc then displays the string and runs the loop again. I don't know how to work a string though. Can someone help me with stings?
Three main functions or operators are relevant to string manipulation:
:: The plus (+) operator: concatenate strings
:: The sub() command: pick out a substring of a string
:: The inString() command: get the numerical index of a substring in a string.
Can you be a bit more specific?
:: The plus (+) operator: concatenate strings
:: The sub() command: pick out a substring of a string
:: The inString() command: get the numerical index of a substring in a string.
Can you be a bit more specific?
Code:
:"temp->str1
:" foo bar->str2
:str1+str2->str3
:disp str3
the display will look like
temp foo bar
You only need one quote for the text not two (e.g. "Temp" vs. "Temp)? How do I clear the string? How can I add a letter to the string? (e.g. I have temp in my string and I want to add the letter a to the end)
Correct, it is one of the optimizations that you can do in ti-basic.
Also, this might be of interest/help to you
http://tibasicdev.wikidot.com/sk:strings
Also, this might be of interest/help to you
http://tibasicdev.wikidot.com/sk:strings
Yes, if it doesn't affect order of operations, you don't need to balance quotes or parentheses. It's a small, oft overlooked feature of TI BASIC, but I've been able to shave 1-2kb off of a 14kb BASIC program just because of that.
JPfowl wrote:
How does one get to the string command?
The StrN are variable names, not commands, to be a bit pedantic. 
If you're using a TI-89, you can also do this:
Code:
Where key is the key you've pressed. The & operator concatenates 2 string variables. Choose the display command as you wish.
Cheers!
Charlie
Code:
"Test message" & key ->new_msg
disp new_msg
flib("slmsg:"&new_msg)
pause new_msg
Where key is the key you've pressed. The & operator concatenates 2 string variables. Choose the display command as you wish.
Cheers!
Charlie
CharlieMAC wrote:
If you're using a TI-89, you can also do this:
Code:
Where key is the key you've pressed. The & operator concatenates 2 string variables. Choose the display command as you wish.
Cheers!
Charlie
Code:
"Test message" & key ->new_msg
disp new_msg
flib("slmsg:"&new_msg)
pause new_msg
Where key is the key you've pressed. The & operator concatenates 2 string variables. Choose the display command as you wish.
Cheers!
Charlie
I don't have a 89 I have a 84.
Ok to add a letter to the end. This would work
Code:
Code:
"Temp->Str1
Str1+"BLAH->Str1
//This would take Str1 which contains Temp and add BLAH to it. //Which would display as: TempBLAH
http://www.ticalc.org/archives/files/fileinfo/363/36335.html
Check out these programs here, and ask any questions you have about them.
Check out these programs here, and ask any questions you have about them.
tifreak8x wrote:
http://www.ticalc.org/archives/files/fileinfo/363/36335.html
Check out these programs here, and ask any questions you have about them.
Check out these programs here, and ask any questions you have about them.
Will do when I get done with school today. How do I delete/clear a string?
Go into PRGM in the editor, down near the bottom of the list is a command called DelVar, just use it and put what string variable you want deleted behind that.
Let's say I have some text and some integer (like an answer stored into x) and I want to join those so I can output them together. How could I do so? Is it possible with strings? (I want to join them to make it easier to output if I have multiple groups of text and integer).
check out these two commands:
Equ>String(
String>Equ(
what you want is Equ>String, in this case. store your value to Y1-Y0, and then use Equ>String(YN, StringN to store it into StringN.
then just concatenate the two strings like shown above =)
edit: oh, and Y1-Y0 can be accessed through Vars ->Y-Vars ->Function
Equ>String(
String>Equ(
what you want is Equ>String, in this case. store your value to Y1-Y0, and then use Equ>String(YN, StringN to store it into StringN.
then just concatenate the two strings like shown above =)
edit: oh, and Y1-Y0 can be accessed through Vars ->Y-Vars ->Function
All right, my turn.
In order to display text in a string and an integer at the same time, you must do one of two things:
*Use two different display commands.
*Or, if you intend on concatenating the integer with the string, you must convert the integer to a string. This routine will come in handy for that.
Does that answer your question?
In order to display text in a string and an integer at the same time, you must do one of two things:
*Use two different display commands.
*Or, if you intend on concatenating the integer with the string, you must convert the integer to a string. This routine will come in handy for that.
Does that answer your question?
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