输出为什么错误呢
程序代码：#include "stdio.h"
void main()
{
int i;
char *a[4]={"this","is","a","book"};
for(i=0;i<4;i++)
printf("%s ",a[i]);
printf("\n");
}上述代码顺序输出结果，没问题，但改为下面的代码后(想逆序输出)，运行后确显示“该内存不能为read”，奇怪了？？？？？程序代码：#include "stdio.h"
void main()
{
int i;
char *a[4]={"this","is","a","book"};
for(i=3;i>=0;i++)
printf("%s ",a[i]);
printf("\n");
}
