下面程序的输出结果为多少?void Func(char str_arg[100]){ printf("%d\n", sizeof(str_arg));}int main(void){ char str[] = "Hello"; printf("%d\n", sizeof(str)); printf("%d\n", strlen(str)); char *p = str; printf("%d\n", sizeof(p)); Func(str);}
A.5 4 4 4
B.6 5 4 4
C.5 5 5 5
D.5 5 5 4