1028. List Sorting (25) PAT甲级

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#include
#include
#include
#define MAX_N 100100

using namespace std;

struct Student{
    int id;
    char name[15];
    int grade;
}stu[MAX_N];

bool cmp1(struct Student a,struct Student b){
    return a.idbool cmp2(struct Student a,struct Student b){
    if(strcmp(a.name,b.name)!=0)    return strcmp(a.name,b.name)<0;
    return a.idbool cmp3(struct Student a,struct Student b){
    if(a.grade!=b.grade)    return a.gradeelse    return a.idint main(){
    int n;
    int choice;
    scanf("%d%d",&n,&choice);
    for(int i=0;iscanf("%d %s %d",&stu[i].id,stu[i].name,&stu[i].grade);
    }
    switch(choice){
        case 1:sort(stu,stu+n,cmp1);break;
        case 2:sort(stu,stu+n,cmp2);break;
        case 3:sort(stu,stu+n,cmp3);break;
    }
    for(int i=0;iprintf("%06d %s %d\n",stu[i].id,stu[i].name,stu[i].grade);
    }
}