一维数组

#include <stdio.h>
    int main(){
    int arr[] = {3,1,2,3,4,5,6,7,8,9,10};
    int *pa = (int *) arr;
    for (int i = 0; i < 10; ++i) {
        printf("%d \n", pa[i]);
        printf("%d \n", *(arr+i));    //指针
        printf("%d \n", *pa++);    //累加指针
    }
    return 0;
}

二维数组

#include <stdio.h>
int main(){
    int arr[][4] = {10,2,3,4,
                    1,2,3,4,
                    5,6,7,8,
                    9,8,7,6,
                    4,3,2,1};
    int *pn = (int *) &arr;
    for (int i = 0; i < 5; ++i) {
        for (int j = 0; j < 4; ++j) {
            printf("%2d", arr[i][j]);
            printf("%2d", *((*arr+i)+j));    //降维指针
            printf("%2d", *(pn+(i*4)+j));    //指针
            printf("%2d", *pn++);    //累加指针
        }
        putchar(10);
    }
    return 0;
}