1.在做C的程序時輸入如何畫斷，如何告知系統(tǒng)我輸入完成了
2.在做字符數(shù)組的寫入時也是報的同樣的錯

#include "stdafx.h"
#include"windows.h"
struct book
{
    float dingj;
    char name[20];
    
};

int main()
{
    struct book book1,max,min;
    int i;
    printf("enter No.1\n");
    scanf_s("%s%f\n", &book1.name,&book1.dingj);
    max = book1;
    min = book1;
    for (i = 2; i < 10;i++)
    {
        printf("enter No.%d\n",i);
        scanf_s("%s%f\n", &book1.name, &book1.dingj);
        if (book1.dingj > max.dingj)
            max = book1;
        if (book1.dingj < min.dingj)
            min = book1;
    }
    printf("max=%s %.2f", max.name, max.dingj);
    printf("min=%s %.2f", min.name, min.dingj);
    system("pause");
    
    return 0;
}

我的輸入是這樣的
enter No.1

1. 10.5 (然后回車，他就報錯了）

請大神解惑，謝謝??！