basicの操作

basicの拡張子はbasです。save、loadでファイルの保存呼び出しを行います。
コメント:rem

10 rem コメント
20 print "hello world"
25 print "hello world again"
>save "hello.bas"
>list
10 rem コメント
20 print "hello world"
25 print "hello world again"
>new
>list
>load "hello.bas"
>list
10 rem コメント
20 print "hello world"
25 print "hello world again"

goto文

>list
10 rem コメント
20 print "hello world"
25 print "hello world again"
30 goto 20
>

変数

>new
>10 x = 5
>20 print x
>run
5

if文

>new
>10 score = 80
>20 if score > 60 then print "ok"
>list
10 score = 80
20 if score > 60 then print "ok"
>run
ok

ifとgoto文

>20 if socre > 60 then goto 30 else goto 40
>30 print "ok"
>40 print "ng"
>30 print "ok": end
>run
ng

ループ

>new
>10 for i = 1 to 10
>20 print i
>30 next i
>list
10 for i = 1 to 10
20 print i
30 next i
>run
1
2
3
4
5
6
7
8
9
10

サブルーチン

>new
>10 print "hello"
>20 gosub 100
>30 end
>100 print "hello from subroutine!"
>110 return
>list
10 print "hello"
20 gosub 100
30 end
100 print "hello from subroutine!"
110 return
>run
hello
hello from subroutine!
>

サブルーチン

>new
>10 input "your age? ", age
>20 print "your are "; age; " years old!"
>list
10 input "your age? ",age
20 print "your are ";age;" years old!"
>ru
 Syntax error
>run
your age? 18
your are 18  years old!
>

basicの数当てゲーム

10 answer = int(rnd(1)*10)+1
20 input "guess (1-10)? ",guess
30 if guess > answer then print "too high!" : goto 20
40 if guess < answer then print "too low!" : goto 20
50 if guess = answer then print "you got it!" : end
>run
guess (1-10)? 4
you got it!