第十七周项目六：学生成绩统计

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/**copyright (c) 2014, 烟台大学计算机学院.*All rights reserved.*文件名称：test.cpp *作者：陆云杰*完成日期：2014年12月19日 *版本号：v1.0* **问题描述：学生成绩统计*程序输入：无*程序输出：无*/#include <iostream>#include <cstring>using namespace std;struct Student{    char num[13];    char name[10];    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90int 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)  //计算总分和均分{    int i;    for(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;    }    return;}void sort1(Student s[],int n)   //按总分降序排序{    int i,j;    Student t;    for(j=0; j<n-1; j++)    {        for(i=0; i<n-j-1; i++)            if (s[i].grade<s[i+1].grade)            {                t=s[i];  //交换结构体                s[i]=s[i+1];                s[i+1]=t;            }    }    return;}void sort2(Student s[],int n)   //按学号升序排序{    int i,j;    Student  t;    for(j=0; j<n-1; j++)    {        for(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;            }    }    return;}void output(Student s[],int n)  //输出成绩单{    int i;    for(i=0; i<n; i++)    {        cout<<s[i].num<<", "<<s[i].name<<", ";        cout<<s[i].cpp<<", "<<s[i].math<<", "<<s[i].english<<", ";        cout<<s[i].grade<<", "<<s[i].average<<endl;    }    cout<<endl;    return;}void outputExcellent(Student s[],int n)   //输出优秀者{    int i;    for(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<<", ";            cout<<s[i].cpp<<", "<<s[i].math<<", "<<s[i].english<<", ";            cout<<s[i].grade<<", "<<s[i].average<<endl;        }    cout<<endl;    return;}
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