/*malloc函数的使用*/
#include<stdio.h>
#include<stdlib.h>
#define NULL 0
main()
{
    int *p,*table;
    int size;
    printf("\nwhat is the size of table?");
    scanf("%d",size);
    printf("\n");
    if((table=(int*)malloc(size*sizeof(int)))==NULL)
    {
        printf("no space available");
        exit(1);
    }
    else
    {
    printf("\n address of the first byte is %u\n",table);
    printf("\n input table value\n");
    for(p=table;p<table+size;p++)
        scanf("%d",p);
    for(p=table+size-1;p>=table;p--)
        printf("%d is stored in address %u \n",*p,p);
    }
    }

报什么错？malloc就要free，对称的。

just have a try

错误挺多的，猜了下你的功能改成如下：
#include<stdio.h>
#include<stdlib.h>
//#define NULL 0//重复定义
int main()
{
    int *table;
    int size,i;
    printf("\nwhat is the size of table?");
    scanf("%d",&size);//
    printf("\n");
    if((table=(int*)malloc(size*sizeof(int)))==NULL)
    {
        printf("no space available");
        exit(1);
    }
    else
    {
    printf("\n address of the first byte is %p\n",table);//或%x,不过这个地址是随机的，每次都会不一样
    printf("\n input table value\n");
    for(i=0;i<size;i++)
        scanf("%d",table+i);
    for(i=size-1;i>=0;i--)
        printf("%d is stored in address %p \n",*(table+i),table+i);
    }
    free(table);
    return 0;
}

多谢