编写程序，从键盘输入n(n<=10)本书的名称和定价并存入结构数组中,从中查找定价最高和最低的书的名称和定价，并输出。提示（1）定义结构体 （2）定义结构体数组

Question

#include<stdio.h>
struct book{
char name[80];
double price;
};
int main()
{
    int i,n,j;
    double max,min;
    char a,b;
    struct book s[10];
    printf("Input n:");
    scanf("%d",&n);
    for(i=0;i<n;i++)
       {
    printf("Input the name,price of the %d book:",i+1);
    scanf("%s%lf",s[i].name,&s[i].price);
       }
       max=s[0].price,min=s[0].price;
       a=s[0].name,b=s[0].name;
       for(i=0;i<n;i++)
       {
           if(max<s[i].price)
            a=s[i].name;
           max=s[i].price;
       }
       for(j=0;j<n;j++)
       {
           if(min>s[j].price)
            b=s[j].name;
           min=s[j].price;
       }
       printf("The book with the max price:%s,%.1f\n",a,max);
       printf("The book with the min price:%s,%.1f\n",b,min);
    return 0;
}

为什么无法输出结果

Answer 1

改动处见注释，供参考：

#include<stdio.h>
#define N 11     //修改
struct book{
    char name[80];
    double price;
};
int main()
{
    int i,n,j;
    double max,min;
    char a,b;
    struct book s[N]; //s[10] 修改
    printf("Input n:");
    scanf("%d",&n);
    for(i=0;i<n;i++)
    {
        printf("Input the name,price of the %d book:",i+1);
        scanf(" %s%lf",s[i].name,&s[i].price);
    }
    max=s[0].price,min=s[0].price;
                       //a=s[0].name,b=s[0].name;修改
    for(i=0;i<n;i++)
    {
        if(max < s[i].price)
                      //a=s[i].name; 修改
            max=s[i].price;
                      //}
                      //   for(j=0;j<n;j++)
                      //   {
        if(min > s[i].price)
                      //b=s[j].name;
            min=s[i].price;
    }
    for (i=0;i<n;i++)
    {
        if (s[i].price == max)
            printf("The book with the max price:%s,%.1f\n",s[i].name,s[i].price);
            //printf("The book with the max price:%s,%.1f\n",a,max);修改
        if (s[i].price == min)
            printf("The book with the min price:%s,%.1f\n",s[i].name,s[i].price);
            //printf("The book with the min price:%s,%.1f\n",b,min);修改
    }
    return 0;
}