d8e8375366
GW-BASIC reimplementation in C11, using Microsoft's open-sourced 8088 assembly as the authoritative reference. Tokenizer (CRUNCH/LIST), expression evaluator with operator precedence, all math functions (SIN, COS, TAN, ATN, SQR, LOG, EXP, RND, etc.), string functions (LEFT$, RIGHT$, MID$, CHR$, ASC, VAL, STR$, etc.), PRINT statement with comma/semicolon zones, TAB(), SPC(). Handles integer/single/double types with correct promotion, D exponent for double-precision literals, type suffixes (%, !, #), &H hex/&O octal literals, MBF conversion routines, and GW-BASIC-compatible number formatting. Platform-independent via HAL vtable; POSIX backend included.
20 lines
269 B
QBasic
20 lines
269 B
QBasic
PRINT "Arithmetic:"
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PRINT 2+2
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PRINT 10-3
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PRINT 6*7
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PRINT 100/3
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PRINT 2^10
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PRINT 17 MOD 5
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PRINT 17\5
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PRINT "Functions:"
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PRINT SIN(3.14159/2)
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PRINT COS(0)
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PRINT SQR(144)
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PRINT ABS(-42)
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PRINT INT(3.7)
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PRINT FIX(-3.7)
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PRINT LOG(1)
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PRINT EXP(0)
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PRINT SGN(-5)
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PRINT ATN(1)*4
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