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the end sign of document of linuxi tried all the linux version and found that the end of the file are 0a(alias LF),this is the operating system requir 阅读全文
posted @ 2017-10-15 21:14
diamondDemand
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the meaning of voidvoid is "no type", void is "no type pointer", you can point to any data type void pointer usage specification1.void pointer can poi 阅读全文
posted @ 2017-10-15 20:49
diamondDemand
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the prototype of relloc is extern void *realloc(void *men_address, unsigned int newsize) grammarpointer name = (data type*)realloc(the name of the poi 阅读全文
posted @ 2017-10-15 17:55
diamondDemand
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assert macroNote: assert is a macro, not a function.in the c assert.h header file. the prototype of an assert macro is defined in <assert.h> and its e 阅读全文
posted @ 2017-10-15 17:19
diamondDemand
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virtual is the keyword of defination c++ virtual functionconcept: (1)inheritance as a prerequisite (2)decorate the function with virtual keyword in th 阅读全文
posted @ 2017-10-15 17:15
diamondDemand
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cast a base calss pointer (or reference) to the inheritance class pointer, dynamic_cast will be based on the base class pointer is really pointing to 阅读全文
posted @ 2017-10-15 16:24
diamondDemand
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a summary of c++ friends' functionin fact, there are probable the following two situations needs to use the friends' function: (1)some occasions of op 阅读全文
posted @ 2017-10-15 12:20
diamondDemand
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