指针我们已经学习的差不多了,今天我来给大家分享几个经典的题目,来让我们相互学习🏎️🏎️🏎️
cppint main() { int a[4] = { 1, 2, 3, 4 }; int* ptr1 = (int*)(&a + 1); int* ptr2 = (int*)((int)a + 1); printf("%x,%x", ptr1[-1], *ptr2); return 0; }
cpp#include <stdio.h> int main() { int a[3][2] = { (0, 1), (2, 3), (4, 5) }; int* p; p = a[0]; printf("%d", p[0]); return 0; }
cppint main() { int a[5][5]; int(*p)[4];//数组指针 p = a;//类型合适吗? //a - int(*)[5] //p - int(*)[4] printf("%p, %d\n", &p[4][2] - &a[4][2], &p[4][2] - &a[4][2]); // //%p是打印地址,认为内存中存储的补码就是地址 // return 0; }
图解:
cppint main() { int aa[2][5] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 }; int* ptr1 = (int*)(&aa + 1); int* ptr2 = (int*)(*(aa + 1)); printf("%d,%d", *(ptr1 - 1), *(ptr2 - 1)); return 0; }
cpp#include <stdio.h> //阿里的笔试题 int main() { char* a[] = { "work","at","alibaba" }; char** pa = a; pa++; printf("%s\n", *pa); return 0; }
相信大家一定从今天的题目当中收获满满,希望大家有美好的一天!💓💓💓