C - Find the size of structure

Question

I was asked this as interview question. Couldn\'t answer.

Write a C program to find size of structure without using the sizeof operator.

Answer 1

struct ABC
{
    int a, b[3];
    int c;
    float d;
    char e, f[2];
};
int main()
{
    struct ABC *ptr=(struct ABC *)0;
    clrscr();
    ptr++;
    printf("Size of structure is: %d",ptr);
    return 0;
}