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$, etc.), PRINT statement with comma/semicolon zones, TAB(), SPC(). Handles integer/single/double types with correct promotion, D exponent for double-precision literals, type suffixes (%, !, #), &H hex/&O octal literals, MBF conversion routines, and GW-BASIC-compatible number formatting. Platform-independent via HAL vtable; POSIX backend included.
15 lines
304 B
QBasic
15 lines
304 B
QBasic
PRINT LEFT$("HELLO WORLD", 5)
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PRINT RIGHT$("HELLO WORLD", 5)
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PRINT MID$("HELLO WORLD", 7, 5)
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PRINT LEN("TEST")
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PRINT CHR$(65)
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PRINT ASC("A")
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PRINT VAL("3.14")
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PRINT STR$(42)
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PRINT SPACE$(5)+"X"
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PRINT STRING$(10, 42)
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PRINT HEX$(255)
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PRINT OCT$(255)
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PRINT INSTR("HELLO WORLD", "WORLD")
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PRINT "ABC" + "DEF"
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