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11 lines
247 B
ReStructuredText
11 lines
247 B
ReStructuredText
stddef.h
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====================================
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简介:
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======
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定义了关于指针的常用类型
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定义:
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=====
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``typedef __PTDIFF_TYPE__ ptrdiff_t`` : 两个指针相减的结果类型
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``NULL ((void *) 0)`` : 空指针 |