C语言面试题——指针与数组

#include
#include
#define F(X,Y) (X)*(Y)struct s{int x;int y;
}data[2]&＃61;{{10,100},{20,200}};int main(void)
{char str[][20] &＃61; {{"Hello"},{"Beijing"}};char *ptr &＃61; str[0];//等同于char *ptr &＃61; *str;printf("strlen(p&＃43;20) &＃61; %d\n",strlen(ptr&＃43;20));
//ptr&＃43;20之后&＃xff0c;指针ptr指向了字符串“Beijing”&＃xff1b;
int a &＃61; 3, b&＃61;4;printf("%d\n",F(a&＃43;&＃43;,b&＃43;&＃43;));struct s *p &＃61; data;printf("%d\n",&＃43;&＃43;(p->x));return 0;
}


运行结果&＃xff1a;

strlen(p&＃43;20) &＃61; 7
12
11