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[MSDN Library June 1998] Null Pointers (33.5516944069576%)

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[MSDN Library September 1992] Null Pointers (30.2215444352541%)

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[MSDN Library September 1992] Null Characters (26.8861176646819%)

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Product Documentation > C/C++ 7.0 > C Language Reference > Appendix B Implementation-Defined Behavior > B.14 Library Functions