Shulou(Shulou.com)06/02 Report--

Void getmemory (char p)

{

P = (char) malloc

Strcpy (p, "hello world")

}

Int main ()

{

Char * str=NULL

Getmemory (str)

Printf ("% SSPO", str)

Free (str)

Return 0

} what will be the problem?

[standard answer] the program crashes, malloc in getmemory cannot return dynamic memory, and free () is dangerous for str operations.

Refer to the code on the network:

Void getmemory (char * p)

{

P = (char) malloc

Strcpy (p, "hello world")

}

Int main ()

{

Char str=NULL

Getmemory & str)

Printf ("% SSPO", str)

Free (str)

Return 0

}

Personal comments:

Char str=NULL; is equivalent to defining a string str, which is also a character pointer str.

Getmemory (& str); passes a string address.

Char * p can be thought of as (char) p, which means the pointer p of the string str.

P is the string str. Is also a single-character pointer str.

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