How to 'export' a code in BASIC?

Cheers for your second question, made me boot my msx at 8am. Thank you for that

To answer your first question, just type save"hello.bas" and your two lines are saved to the hello.bas file. If you want to load the file into an ASCII editor, you should type save"hello.bas",a. This way you can also use the command merge which adds your current BASIC lines to an existing BASIC file.

To answer your second question, like Meits, I'd use error codes as well. I wouldn't use his listing though, because when the file DOES exist, it prints the file on your screen. Which you probably don't want to.

I'm sure better solutions will come up, but I wrote this one just 30 minutes ago

10 on error goto 30
20 name "hello.bas" as "hello.bas"
30 iferr=53thenprint"File does not exist"
40 iferr=65thenprint"File does exist"
50 resume 60
60 Print"End of program"

Line 20 always generates an error. It's either a 'File not found' (error code 53) or a 'File already exists' (error code 65).

Wow. Thanks. Two great answers for question 2. But I think I wasn't clear about the question 1. I would like just to create a file with the generated code. The user answer a question, and the program generates a code based on the entered values. For example:

10 CLS
20 INPUT "Type musical notes:";N$
30 ?:? "YOUR CODE:"
40 ?"10 CLS":?"20 PLAY"+CHR$(34)+N$+CHR$(34)
50 ?:? "EXPORT CODE TO A FILE? (Y/N)"

I would like to save the two generated lines to a new file.

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60 k=instr("YyNn",input$(1)):if k=0 then 50 else if k>2 then ?"BYE!":end
70 open "YOURCODE.TXT" for output as #1
80 ?#1,"10 CLS":?#1,"20 PLAY"+CHR$(34)+N$+CHR$(34):close #1:?"CODE EXPORTED!"

LOAD-command can load your exported program. To save file in ASCII text, use ",A" parameter. ie.
SAVE"MYPROG.TXT",A

In order to avoid problems, please note that only 2 first characters in BASIC program variable names matter.
FILE$="FOO":FISH$="BAR":?FILE$
BAR
Ok