C语言学习--指针数组

 

 

#include<stdio.h>

//指针数组， 数组里面的每一个元素都是指针
int main()
{

    int a = 10;
    int b = 20;
    int c = 30;
    // int* p1 = &a int* p2 = &b int* p3 = &c

    int* number[3] ={&a,&b,&c};

    printf("%d sizeof\n ", sizeof(number));

    for (int i=0; i<sizeof(number)/sizeof(number[0]);i++)
    {
        printf("%d\n",*number[i]);
    }


}

 

 

 

#include<stdio.h>

//指针数组， 数组里面的每一个元素都是指针
int main()
{

    int a = 10;
    int b = 20;
    int c = 30;
    // int* p1 = &a int* p2 = &b int* p3 = &c

    int* number[3] ={&a,&b,&c};

    printf("%d sizeof\n ", sizeof(number));

    for (int i=0; i<sizeof(number)/sizeof(number[0]);i++)
    {
        printf("%d\n",*number[i]);
    }

    //定义一个指针用来保存number首元素的地址

    //unmber = &unmber[0] = &(int*) = int**

    int** p = number;
      for (int i=0; i<sizeof(number)/sizeof(number[0]);i++)
    {
        printf("%d\n",**(p+i));
    }


}

24 sizeof
10
20
30
10
20
30