指针练习------详细的图文并茂法来解析

int main()

{

   //一维数组

   int a[] = { 1,2,3,4 };

   printf("%d\n", sizeof(a));

   printf("%d\n", sizeof(a + 0));

   printf("%d\n", sizeof(*a));

   printf("%d\n", sizeof(a + 1));

   printf("%d\n", sizeof(a[1]));

   printf("%d\n", sizeof(&a));

   printf("%d\n", sizeof(*&a));

   printf("%d\n", sizeof(&a + 1));

   printf("%d\n", sizeof(&a[0]));

   printf("%d\n", sizeof(&a[0] + 1));

 //字符数组

   char arr[] = { 'a','b','c','d','e','f' };

   printf("%d\n", sizeof(arr));

   printf("%d\n", sizeof(arr + 0));

   printf("%d\n", sizeof(*arr));

   printf("%d\n", sizeof(arr[1]));

   printf("%d\n", sizeof(&arr));

   printf("%d\n", sizeof(&arr + 1));

   printf("%d\n", sizeof(&arr[0] + 1));

   printf("%d\n", strlen(arr));

   printf("%d\n", strlen(arr + 0));

   printf("%d\n", strlen(*arr));

   printf("%d\n", strlen(arr[1]));

   printf("%d\n", strlen(&arr));

   printf("%d\n", strlen(&arr + 1));

   printf("%d\n", strlen(&arr[0] + 1));

   char arr[] = "abcdef";

   printf("%d\n", sizeof(arr));

   printf("%d\n", sizeof(arr + 0));

   printf("%d\n", sizeof(*arr));

   printf("%d\n", sizeof(arr[1]));

   printf("%d\n", sizeof(&arr));

   printf("%d\n", sizeof(&arr + 1));

   printf("%d\n", sizeof(&arr[0] + 1));

   printf("%d\n", strlen(arr));

   printf("%d\n", strlen(arr + 0));

   printf("%d\n", strlen(*arr));//error

   printf("%d\n", strlen(arr[1]));//error

   printf("%d\n", strlen(&arr));

   printf("%d\n", strlen(&arr + 1));

   printf("%d\n", strlen(&arr[0] + 1));

//指针存常量字符串

   char* p = "abcdef";

   printf("%d\n", sizeof(p));

   printf("%d\n", sizeof(p + 1));

   printf("%d\n", sizeof(*p));

   printf("%d\n", sizeof(p[0]));

   printf("%d\n", sizeof(&p));

   printf("%d\n", sizeof(&p + 1));

   printf("%d\n", sizeof(&p[0] + 1));

   printf("%d\n", strlen(p));

   printf("%d\n", strlen(p + 1));

   printf("%d\n", strlen(*p));

   printf("%d\n", strlen(p[0]));

   printf("%d\n", strlen(&p));

   printf("%d\n", strlen(&p + 1));

   printf("%d\n", strlen(&p[0] + 1));

   //二维数组

   int a[3][4] = { 0 };

   printf("%d\n", sizeof(a));

   printf("%d\n", sizeof(a[0][0]));

   printf("%d\n", sizeof(a[0]));

   printf("%d\n", sizeof(a[0] + 1));

   printf("%d\n", sizeof(*(a[0] + 1)));

   printf("%d\n", sizeof(a + 1));

   printf("%d\n", sizeof(*(a + 1)));

   printf("%d\n", sizeof(&a[0] + 1));

   printf("%d\n", sizeof(*(&a[0] + 1)));

   printf("%d\n", sizeof(*a));

   printf("%d\n", sizeof(a[3]));  

   return 0;

}