int printf(const char*, ...); int main(){    char a;    short b;     printf("sizeof a : %d %d\n", sizeof(char), sizeof(a));    printf("sizeof b : %d %d\n", sizeof(short), sizeof(b));     int ii[] = {}; /* gnu extension, size = 0 */    printf("sizeof ii : %d\n", sizeof ii);     int kk[] = { 1 };    printf("sizeof kk : %d\n", sizeof kk);     char cc[] = "12";    printf("sizeof cc : %d\n", sizeof cc);     __WCHAR_TYPE__ ll[] = L"12345";    printf("len-of ll : %d\n", sizeof ll / sizeof ll[0]);     static struct {        int a,b,c;        int d[];    } ss[] = {{ 1, 2, 3, {} }};    printf("sizeof ss : %d\n", sizeof ss);     return 0;}