Title: given structure
struct A
{
char t:4;
char k:4;
unsigned short i:8;
unsigned long m;
}; 问sizeof(A) = ?
【standard answer】
8
topic:
struct name1{
char str;
short x;
int num;
} ；Seek sizeof (name1)?
【standard answer】
8
topic:
struct name2{
char str;
int num;
short x;
}; 求sizeof(name2)？
[Answer] standard 12
Title: Analyze the results of the following program is run ().
union
{
struct
{
unsigned char c1:3;
unsigned char c2:3;
unsigned char c3:2;
}s;
unsigned char c;
}u;
int main()
{
u.c=100;
printf("%d\n",u.s.c1);
printf("%d\n",u.s.c2);
printf("%d\n",u.s.c3);
return 0;
}
【answer】
This title examines data storage format in the bit field C language. c s structure and share the same memory, the memory size of the largest member of the occupied memory size. Storing the following format:
