#include "stdio.h"

 void main()

 {

     int arr[] = {,,};

     int* arr2 = malloc(*sizeof(int));//malloc calloc relloc

     arr2[] = ;

     arr2[] = ;

     printf("%d\n",arr2[]);

     printf("%d\n",arr2[]);

     printf("%d\n",arr2[]);

     free(arr2);//释放资源内存，否则电脑会卡

 }