Eremey Valetov
c2d73e9c24
Add OPEN/CLOSE with both modern (OPEN "f" FOR OUTPUT AS #n) and compact (OPEN "O",#n,"f") syntaxes. PRINT#, WRITE#, INPUT#, LINE INPUT# for sequential file access. EOF() now returns real file status with peek-ahead. LOC/LOF return approximate values. PRINT USING with numeric (#, ., +, -, $$, **, ^^^^, comma grouping) and string (!, &, \ \) format specifiers. Shared by PRINT USING and PRINT# USING. SAVE (ASCII), LOAD (with ,R auto-run), and MERGE for program persistence. MID$ assignment (MID$(var$, start [,len]) = expr) for in-place string modification. Works with both scalar variables and array elements. Graphics stubs for SCREEN, PSET, PRESET, LINE, CIRCLE, DRAW, PAINT, VIEW, WINDOW, PALETTE - parse and discard arguments so graphics-heavy programs don't crash. SYSTEM and NEW/CLEAR now close all open files. Version bumped to 0.3.0. 22 tests pass (16 existing + 6 new).
12 lines
280 B
QBasic
12 lines
280 B
QBasic
10 REM File I/O test
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20 OPEN "/tmp/gwbasic_fio_test.txt" FOR OUTPUT AS #1
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30 PRINT #1, "Hello from GW-BASIC"
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40 PRINT #1, "Second line"
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50 CLOSE #1
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60 OPEN "/tmp/gwbasic_fio_test.txt" FOR INPUT AS #1
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70 LINE INPUT #1, A$
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80 LINE INPUT #1, B$
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90 CLOSE #1
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100 PRINT A$
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110 PRINT B$
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