Segmentation fault when memset struct array in c

Question

I am trying to empty all data in the struct array.

but it turns out to be segmentation fault. Can someone please help me.

Struct

struct entry
{
   char  user;
    char  name[9];
    char  extension[4];
    short blockcount;
    short block[8];
};
struct entry directory[128];

main()

for (int i = 0; i < 128; ++i)
{
      memset(&directory[i], 0, sizeof(directory));
}

Pras · Accepted Answer · 2017-05-19 04:31:01Z

5

You need to change

memset(&directory[i], 0, sizeof(directory));

to

memset(&directory[i], 0, sizeof(struct entry));

as you want to memset single element of array of structure

To memset entire arry you can also use

memset(directory, 0, sizeof(directory));// single statement, no need to loop all elements

answered May 19, 2017 at 4:31

Pras

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2 Comments

Thanks, never thought it was that simple

sizeof(directory[0]) would also work in the same way. To keep it as similar to what you asked in the question.