使用指针遍历二维数组

#include"stdio.h"#include"math.h"main(){    /*    int arr[10]= {1,2,3,4,5,6,7,8,9,10},i,j;    int *p;    p=arr;    for(i=0;i<10;i++){        printf("%5d",*p++);    }*/    /*    int arr[3][4]= {{1,2,3,4},{5,6,7,8},{9,10,11,12}},i,j;    int *p;    p=arr;    for(i=0;i<3;i++){            for(j=0;j<4;j++){                printf("%5d",*(*(arr+i)+j));            }        printf("\n");    }*/    int arr[3][4]= {{1,2,3,4},{5,6,7,8},{9,10,11,12}},i,j;    int *p;    p=arr;    for(i=0;i<3;i++){            for(j=0;j<4;j++){                printf("%5d",*p++);            }        printf("\n");    }}