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Sun Studio 12: C User's Guide
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Appendix E Implementation-Defined ISO/IEC C90 Behavior
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E.1 Implementation Compared to the ISO Standard
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E.1.2 Environment (G.3.2)
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E.1.2.1 (5.1.2.2.1) Semantics of arguments to main:
> (5.1.2.3) What constitutes an interactive device:
Sun Studio 12: C User's Guide
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(5.1.2.3) What constitutes an interactive device:
An interactive device is one for which the system library call
isatty()
returns a nonzero value.
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