指针实例理解

# include <stdio.h>

//指针与数组 

void pArry(int *p){

for(int i = 0; i < 4; i++){

printf("%d ",p[i]);

}

printf("\n");

}

//结构体 

struct Person{

char *name;

int age;

}person;

void prin(Person *p){

printf("%d %s\n",p->age,p->name);

}

int main()

{

//指针与常数

int num = 10;

int *p = &num;

printf("%d %d \n",p,*p); //p是存储10的地址 10485316 *p是存储的值10

//指针与数组

int arryto[4] = {0,1,2,3};

pArry(arryto);

int arry[4] = {1,2,3,4};

int *data[4] = {arry,arry+1,arry+2,arry+3};

printf("注意理解：%d %d %d\n",data[0], *(data[0]),*(*data));

person.age = 10;

person.name = "你好";

prin(&person);

//指针与数组需要会应用 对指针的处理（包括野指针）等等 

return 0;

}