70 lines
1.6 KiB
HTML
70 lines
1.6 KiB
HTML
<p>Note: this component focuses on first and second-generation BASICs (such as MSX BASIC, GW-BASIC, SuperBASIC, QuickBASIC, PowerBASIC...).</p>
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<h2>Comments</h2>
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<pre><code>! This is a comment
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REM This is a remark</code></pre>
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<h2>Strings</h2>
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<pre><code>"This a string."
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"This is a string with ""quotes"" in it."</code></pre>
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<h2>Numbers</h2>
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<pre><code>42
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3.14159
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-42
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-3.14159
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.5
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10.
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2E10
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4.2E-14
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-3E+2</code></pre>
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<h2>Dartmouth Basic example</h2>
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<pre><code>5 LET S = 0
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10 MAT INPUT V
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20 LET N = NUM
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30 IF N = 0 THEN 99
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40 FOR I = 1 TO N
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45 LET S = S + V(I)
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50 NEXT I
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60 PRINT S/N
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70 GO TO 5
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99 END</code></pre>
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<h2>GW-BASIC example</h2>
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<pre><code>10 INPUT "What is your name: ", U$
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20 PRINT "Hello "; U$
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30 INPUT "How many stars do you want: ", N
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40 S$ = ""
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50 FOR I = 1 TO N
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60 S$ = S$ + "*"
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70 NEXT I
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80 PRINT S$
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90 INPUT "Do you want more stars? ", A$
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100 IF LEN(A$) = 0 THEN GOTO 90
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110 A$ = LEFT$(A$, 1)
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120 IF A$ = "Y" OR A$ = "y" THEN GOTO 30
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130 PRINT "Goodbye "; U$
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140 END</code></pre>
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<h2>QuickBASIC example</h2>
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<pre><code>DECLARE SUB PrintSomeStars (StarCount!)
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REM QuickBASIC example
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INPUT "What is your name: ", UserName$
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PRINT "Hello "; UserName$
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DO
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INPUT "How many stars do you want: ", NumStars
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CALL PrintSomeStars(NumStars)
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DO
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INPUT "Do you want more stars? ", Answer$
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LOOP UNTIL Answer$ <> ""
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Answer$ = LEFT$(Answer$, 1)
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LOOP WHILE UCASE$(Answer$) = "Y"
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PRINT "Goodbye "; UserName$
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SUB PrintSomeStars (StarCount)
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REM This procedure uses a local variable called Stars$
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Stars$ = STRING$(StarCount, "*")
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PRINT Stars$
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END SUB</code></pre>
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