第二周——有序的结构体数组

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/** Copyright (c) 2013, 烟台大学计算机学院* All rights reserved.* 作    者：申玉迪* 完成日期：2014 年 3 月 4 日* 版 本 号：v1.0*/#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{    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;    }}void sort1(Student s[],int n)      //按总分降序排序{    int i,j,k;    Student t;    for(i=0; i<n; i++)    {        s[i].grade=s[i].cpp+s[i].math+s[i].english;    }    for(j=0; j<n-1; j++)    {        for(k=0; k<n-j-1; k++)        {            if(s[k].grade<s[k+1].grade)            {                t=s[k];                s[k]=s[k+1];                s[k+1]=t;            }        }    }}void sort2(Student s[],int n)      //按学号升序排序{    int i,j;    Student t;    for(i=0; i<n-1; i++)    {        for(j=0; j<n-i-1; j++)        {            if(strcmp(s[j].num,s[j+1].num)>0)            {                t=s[j+1];                s[j+1]=s[j];                s[j]=t;            }        }    }}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<<"   "<<s[i].grade<<"   "<<s[i].average<<endl;    }}void outputExcellent(Student s[],int n)  //输出优秀者：总分超285，单科不低于90{    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<<endl;        }    }}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;}

通过写这个程序，我发现自己忘掉了许多的东西，连基础的赋值都不记得是谁赋给谁了，所以必须要抓紧回顾回顾前面所学的知识了

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