#include<stdio.h>//問題2

 int a[][3] ={{10,20,30},
              {40,50,60},
              {70,80,90}};

 int main(void)
 {
 int*p[] ={a[0],a[1],a[2]};
 int(*q)[3] =a;

 printf("sizeof(int) =%zu\n", sizeof(int)); //4
 printf("sizeof(int*)= %zu\n", sizeof(int *)); //8
 printf("sizeof(int(*)[3]) = %zu\n", sizeof(int(*)[3])); //8
 printf("sizeof a =%zu\n", sizeof a);
 printf("sizeof p =%zu\n", sizeof p);
 printf("sizeof q =%zu\n", sizeof q);

 printf("**a = %d\n", **a);
 printf("a[1][1]= %d\n",a[1][1]);
 printf("*a[1] =%d\n", *a[1]);
 printf("(*a + 1)[1] =%d\n",(*a+1)[1]);
 printf("*(a + 1)[1] =%d\n", *(a+1)[1]);

 printf("**p = %d\n", **p);
 printf("p[1][1]= %d\n",p[1][1]);
 printf("*p[1] =%d\n", *p[1]);
 printf("(*p + 1)[1] =%d\n",(*p+1)[1]);
 printf("*(p + 1)[1] =%d\n", *(p+1)[1]);

 printf("**q = %d\n", **q);
 printf("q[1][1]= %d\n",q[1][1]);
 printf("*q[1] =%d\n", *q[1]);
 printf("(*q + 1)[1] =%d\n",(*q+1)[1]);
 printf("*(q + 1)[1] =%d\n", *(q+1)[1]);

return 0;
 }