将内存0:0处的3000个数据当作375个struct stu型数据,将他们的c,os,masm,java数据项拷贝到数组a的对应数据项中,查找数组a总分在200到400之间的数据,用next连起来,并且打印。
#define NULL 0
char *n;
char *m;
int x,y;
char temp;
int i;
struct stu{
unsigned char c;
unsigned char os;
unsigned char masm;
unsigned char java;
struct stu far * next;
};
void memcopy(void *destaddr,void *srcaddr,int len)//参考memcpy函数。
{
char dest=destaddr;
char const* src=srcaddr;
while(len-->0)
{
*dest++ = *src++;
}
return destaddr;
}
int compare(struct stu *a)
{
unsigned int sum;
sum=a->c+a->os+a->masm+a->java;
if( sum>200&&sum<400) return sum;
else return 0;
}
int main()
{
struct stu a[375],*head,*p;
memcopy(a,(void*)0x0000,3000);
head=&a[0];
for(temp=0;temp<375;temp++)
{
a[temp].next=&a[temp+1];
}
a[374].next=NULL;
i=0;
for(p=head;p!=NULL;p++)
{
if(compare(p)){
printf("a[%d]:%d\n\n",i,compare(p));
getch();
}
p=p->next;
i++;
}