题目1023：EXCEL排序---------Case后面的是count,不是C

#include<stdio.h>
#include<algorithm>
#include<cstring>
using namespace std;struct student
{char num[10];char name[10];int grade;
}s[100002];
int cmp1(student s1,student s2)//case 1 按照学号递增 
{return strcmp(s1.num,s2.num)<0; 
}
int cmp2(student s1,student s2)//case 2 姓名的非递减字典
{if(strcmp(s1.name,s2.name)==0) return strcmp(s1.num,s2.num)<0; else return strcmp(s1.name,s2.name)<0;
} 
int cmp3(student s1,student s2)//case3
{if(s1.grade==s2.grade) return strcmp(s1.num,s2.num)<0; else return s1.grade<s2.grade;
} 
int main()
{int N,C;int count=0;while(scanf("%d %d",&N,&C)!=EOF){count++;if(N==0 && C==0) return 0;int i;for(i=0;i<N;i++)scanf("%s %s %d",s[i].num,s[i].name,&s[i].grade);switch(C){case 1:{sort(s,s+N,cmp1);break;}case 2:{sort(s,s+N,cmp2);break;}case 3:{sort(s,s+N,cmp3);break;} }printf("Case %d:\n",count);for(i=0;i<N;i++)printf("%s %s %d\n",s[i].num,s[i].name,s[i].grade);    }return 0;
}