memory allocation for structures elements

Question

Hi I am having difficulties in understanding about how the memory is allocated to the structure elements.

For example if i have the below structure and the size of c

Answer 1

to avoid structure padding! #pragma pack ( 1 ) directive can be used for arranging memory for structure members very next to the end of other structure members.

#pragma pack(1)
struct temp
{
int a;     // size is 4
int b;     // size is 4
double s;  // size is 8
char ch;   //size is 1
};

size of structure would be:17