Answer Posted / lakshman naganoor

By #pragma

Example:
#pragma pack(push,1)
struct mystruct_A {
int b;
short d;
double c;
char m;
};
#pragma pack(pop)

main()

{
printf("size of structure mystruct_Ad is %d\n",sizeof
(struct mystruct_A));
}

size of structure mystruct_Ad is 15

Note:size of structure mystruct_Ad without using #pragma

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