//无法实现书名的排序,求!指点.
#include<stdio.h>
#include<string.h>


struct book
{
        char name[10];
        float price;
}
        pers[10];

void change(void);
void print_book(void);
void putinbook(void);

void main()
{   
        putinbook();
        print_book();               
        change();
        printf("That's ok!\n");
        system("pause");
}

void print_book(void)
{
        int i;
        printf("the first turn:\n");
        for(i=0;i<10;i++)
        printf("%s\t%g\n",pers[i].name,pers[i].price);
}

void putinbook(void)
{
        int i;
        printf("Please input 10 books name,price:\n");
        for(i=0;i<10;i++)
        scanf("%s %f",pers[i].name,&pers[i].price);
}
void change(void)
{
        int i,finish,j;
        float min;
        char minname[10];
        printf("the turn after sort:\n");
        printf("book name\tbook price\n");
        for(i=0;i<10;i++)
        {
             finish=1;
             for(j=0;j<10;j++)
             {
                 if(pers[j].price<pers[j+1].price)
                 {
                      min=pers[j].price;
                      pers[j].price=pers[j+1].price;
                      pers[j+1].price=min;
                      strcpy(minname,pers[j].name);
                      strcpy(pers[j].name,pers[j+1].name);
                      strcpy(pers[j+1].name,minname);
                      finish=0;
                 }
                 if(name[j]>name[j+1])
                 {
                     min=name[j];
                     name[j]=name[j+1];
                     name[j+1]=min;
                     strcpy(name[j],name[j+1]);
                     strcpy(name[j+1],minname);
                     finish=0;
                 }
                 
             }
             if(finish==1)   
             break;
        }
        for(i=0;i<10;i++)
        printf("%s\t\t%g\n",pers[i].name,pers[i].price);
}