第17周项目6-4,使用结构体类型,完成相关函数的定义

编号及代码:

/*

*Copyright (c)2014,计算机与控制工程学院

*All rights reserved 

*作者:范星月

*完成日期:2014年12月23日

*版本号:v1.0

*

*问题输入:在main 函数中已经对结构体进行了初始化,完成相关函数的定义,实现main 函数中的要求的功能

*问题输入:无

*问题输出:输出成绩

*/
#include <iostream>
#include <cstring>
using namespace std;
struct Student
{
    char num[13];//尽管都是有数字构成,但看做字符更合适,学号12位,定义13位,便于处理成字符串
    char name[10];//每个汉字占两个字节,10个字节足够用啦
    int cpp;
    int math ;
    int english;
    int grade;
    double average;
};
void calculate(Student s[],int n);  //计算总分和均分,数据在s数组中,共有n个元素
void sort1(Student [],int);      //按总分降序排序
void sort2(Student [],int);      //按学号升序排序
void output(Student [],int);     //输出成绩单
void outputExcellent(Student [],int);  //输出优秀者:总分超285,单科不低于90
int main()
{
    Student stu[]= {{"201152501104","Tom",65,69 ,68 },
        {"201152501114","Jeery",94 ,89 ,63 },
        {"201152501138","Speike",67 ,62 ,84 },
        {"201152501204","Tyke",100 ,95 ,91 },
        {"201152501202","Tuffy",59 ,80 ,55 },
        {"201152501115","Butch",100 ,99 ,89 },
        {"201152501201","Lightning",95 ,92 ,99 },
        {"201152501145","Topsy",88 ,56 ,67 },
        {"201152501203","Droopy",62 ,62 ,95 },
        {"201152501140","Drupa",80 ,60 ,86 },
        {"201152501205","Buzz",73 ,90 ,94}
    };
    int stuNum=sizeof(stu)/sizeof(stu[0]);  //用sizeof运算确定数组中元素个数
    //计算总分和均分后输出
    calculate(stu,stuNum);
    cout<<"下面是成绩单:"<<endl;
    output(stu,stuNum);
    cout<<"优秀者名单:"<<endl;
    outputExcellent(stu,stuNum);
    //按总分降序排序后输出
    sort1(stu,stuNum);
    cout<<"按总分降序排序后:"<<endl;
    output(stu,stuNum);
    //按学号升序排序后输出
    sort2(stu,stuNum);
    cout<<"按学号升序排序后:"<<endl;
    output(stu,stuNum);
    return 0;
}
void calculate (Student s[],int n )
{
    for (int i=0; i<n; i++)
    {
        s[i].grade=s[i].cpp+s[i].math+s[i].english;
        s[i].average=s[i].grade/3.0;

    }
}
void sort1(Student s[],int n)//按总分降序后输出
{
    Student  t;
    for (int j=0; j<n-1; j++)
        for (int i=0; i<n-1-j; i++)
            if (s[i].grade<s[i+1].grade)
            {
                t=s[i];
                s[i]=s[i+1];
                s[i+1]=t ;
            }
}
void sort2(Student s[],int n )
{
    Student  t;
    for (int j=0; j<n-1; j++)
        for (int i=0; i<n-j-1; i++)
            if (strcmp (s[i].num,s[i+1].num)>0)
            {
                t=s[i];
                s[i]=s[i+1];
                s[i+1]=t;
            }
}
void output (Student s[],int n )
{
    int i;
    for (i=0; i<n; i++)
    {
        cout <<s[i].name<<" "<<s[i].num<<" "<<s[i].cpp<<" "<<s[i].math<<" "<<s[i].english<<" "<<s[i].grade<<" ";
        cout <<s[i].average<<endl;
    }
    cout <<endl;
}
void outputExcellent(Student s[],int  n)
{
    for (int i=0; i<n; i++)
    {
        if (s[i].grade>285&&s[i].cpp>90&&s[i].math>90&&s[i].english>90)
        {
            cout <<s[i].num<<" "<<s[i].name<<" "<<s[i].cpp<<" ";
            cout <<s[i].math<<" "<<s[i].english<<" "<<s[i].grade<<" "<<s[i].average<<endl;
        }
    }
    cout <<endl;


}


运行结果:

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