What's wrong with the code?

Code:

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char *p;
int fd;
int count;
fd = open (filename, O_RDONLY, 0777);
count = read(fd,p,100);
printf("%d",count);

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Quote:

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Originally Posted by meili100

Code:

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char *p;
int fd;
int count;
fd = open (filename, O_RDONLY, 0777);
count = read(fd,p,100);
printf("%d",count);

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Code:

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char* p; // wrong!!!
char p[100]; // this is right :)

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and this is C not C++

http://cpwiki.sf.net/A_pointer_on_pointers
Uninitialized pointers are very bad. I suggest you read the article to get some insight on pointers.