> 我是第一次用C做题目，搞了好一阵子终于可以运行了- -！
> 不过好像出了些比较严重的错误...请各位帮忙指正一下~
> #include <stdio.h>
> #include <malloc.h>
> #include <string.h>
> #define CREAT (struct num *) malloc (sizeof (struct num))
> struct num
> {
> 	char s[8];
> 	int amount;
> 	struct num *next;
> };
> 
> void main ()
> {
> 	
> 	int a,i,j=0;
> 	char scnum [50],cmp[8],temp[8]; 
> 	struct num * head,* p1;
> 	char change (char a[],char b[]);
> 	struct num * rank (struct num *h,char a[]);
> 	scanf ("%d",&a);
> 	for (i=0;i<a;i++)
> 	{
> 		if (i==0) 
> 		{
> 			head=(struct num *) malloc (sizeof (struct num)); 
> 			head->next=NULL;
> 			scanf ("%s",scnum);
> 			change (scnum,temp);
> 			strcpy (head->s,temp);
> 		}
> 		else 
> 		{
> 			scanf ("%s",scnum);
> 			change (scnum,temp);
> 			strcpy (cmp,temp);
> 			head=rank (head,cmp);
> 		}
> 	}
> 	p1=head;
> 	if (p1->next==NULL) printf ("perfect");
> 	else
> 	while (p1!=NULL)
> 	{
> 		printf ("%s %d",p1->s,p1->amount);
> 		p1=p1->next;
> 	}
> }	
> 
> char change (char a[],char b[])
> {
> 	int i,n;
> 	for (i=0,n=0;i<50,n<8;i++)
> 	{
> 		if (n==3) 
> 		{
> 			b[3]='-';
> 			n++;
> 		}
> 		switch(a[i])
> 		{
> 			case'A':
> 			case'B':
> 			case'C':b[n]=2;n++;break;
> 			case'D':
> 			case'E':
> 			case'F':b[n]=3;n++;break;
> 			case'G':
> 			case'H':
> 			case'I':b[n]=4;n++;break;
> 			case'J':
> 			case'K':
> 			case'L':b[n]=5;n++;break;
> 			case'M':
> 			case'N':
> 			case'O':b[n]=6;n++;break;
> 			case'P':
> 			case'R':
> 			case'S':b[n]=7;n++;break;
> 			case'T':
> 			case'U':
> 			case'V':b[n]=8;n++;break;
> 			case'W':
> 			case'X':
> 			case'Y':b[n]=9;n++;break;
> 			default:break;
> 		}
> 	}
> }
> 
> struct num * rank (struct num * h,char a[])
> {
> 	struct num * p0,* p1,* p2;
> 	p1=h;
> 	p0=CREAT;
> 	strcpy (p0->s,a);
> 	p0->amount=1;
> 	while (strcmp (p0->s,p1->s)>0 && (p1->next!=NULL))
> 	{
> 		p2=p1;
> 		p1=p1->next;
> 	}
> 	if (strcmp (p0->s,p1->s)==0)
> 	{
> 		p1->amount+=1;
> 		free (p0);
> 	}
> 	else if (strcmp (p0->s,p1->s)<0)
> 	{
> 		p0->next=p1;
> 		p2->next=p0;
> 	}
> 	else
> 	{
> 		p1->next=p0;
> 		p0->next=NULL;
> 	}
> }