windows - New to batch programming. Help on setting new variables -

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i trying perform below. if try setting accname variable letter rather /p facing syntax error. can tell me why cannot use other variable letter please?

@echo off echo -create set /p program= want do?: goto %program%  :create set /b accname= please type in username: echo %accname% > usernames.txt pause

/p not variable letter, rather switch tells "prompt user enter new value of program variable".

without /p, set program= want do?:, set value of variable program string what want do?:.

and syntax error because there's no /b switch set command.

for full syntax of set command, use set /?.


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