九度题目1023

#include <stdio.h>
#include <string.h>
#include <algorithm>
using namespace std;
struct E{
   int xuehao;
   char name[9];
   int score;
}buf[100000];
bool cmp1(E a,E b){
    if(a.xuehao!=b.xuehao)return a.xuehao<b.xuehao;
}
bool cmp2(E a,E b){
int tmp=strcmp(a.name,b.name);
    if(tmp!=0)return tmp<0;
else return a.xuehao<b.xuehao;
}
bool cmp3(E a,E b){
    if(a.score!=b.score)return a.score<b.score;
else return a.xuehao<b.xuehao;
}
int main (){
        int n;
int c;
int i;
int xuhao=0;
while (scanf("%d",&n)!=EOF&&n!=0){
xuhao++;
   scanf("%d",&c);
for(i=0;i<n;i++){
  scanf("%6d%s%d",&buf[i].xuehao,&buf[i].name,&buf[i].score);
} 
switch(c){
 case 1:sort(buf,buf+n,cmp1);break;
          case 2:sort(buf,buf+n,cmp2);break;
 case 3:sort(buf,buf+n,cmp3);break;
}


printf("Case %d:\n",xuhao);
for(i=0;i<n;i++){
 printf("%06d %s %d\n",buf[i].xuehao,buf[i].name,buf[i].score);
}
}
return 0;

}

所犯错误：

1.题意理解错误，输出的Case i中的i代表用例的序号 而不是排序类别

2.特别注意！！！！要输出六位整数且左边补零，应写为%06d这样的格式！！！！！！！