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DOS开发编程 & 发展交流（开发室） » Does the original BASIC have modular functions (functions)?

Floor1　GOTOmsdos	Posted 2007-10-04 11:55
铂金会员　Posts 1,827　Credits 5,154
Haven't learned BASIC language, does the original BASIC have modular functions (functions)?

Floor2　jjww2999	Posted 2010-06-16 10:27
初级用户　Posts 18　Credits 42
There are functions equivalent to modules, which are subroutines. There is always at least one return statement in such subroutines for returning, and they are called by the gosub statement. The disadvantage is that the variables used in the main program and the subroutine are visible to each other, so special attention should be paid to the pollution problem of variable usage.

Floor3　AlexZhang	Posted 2010-06-17 22:23
系统支持　Posts 440　Credits 1,028
Of course, there are no object-oriented things... Those who wanted object-oriented are disappointed, right? At that time, there was simply no concept of object-oriented.

Floor4　johnsonlam	Posted 2010-06-18 23:53
银牌会员　Posts 497　Credits 1,410　From 九龍，香港
Originally posted by GOTOmsdos at 2007-10-4 11:55 AM: I haven't learned the BASIC language. Does the original BASIC have modular functions (functions)? Is the so-called original BASIC referring to Microsoft BASIC? Until Quick BASIC, there was no concept of object. Visual BASIC is not BASIC at all!

Floor5　netwinxp	Posted 2010-06-20 14:24
高级用户　Posts 366　Credits 741
The original BASIC on PC should be ROMBASIC (started by INT 18H), and I can't quite remember if it supports subroutines. I used IBM's BASICA early on and remember that it could call subroutines. QBWIN already has things like controls and properties, and many one-key restore interfaces were written with it. [ Last edited by netwinxp on 2010-6-20 at 14:27 ]