第二周 项目二 有序的结构体数组

/** 程序的版权和版本声明部分* Copyright (c)2013, 烟台大学计算机学院学生* All rightsreserved.* 文件名称：score.cpp                           * 作    者：                            * 完成日期：  2014年 3 月 12  日* 版本号： v1.0      * 输入描述：已经在程序中初始化* 问题描述：将学生成绩信息存储在结构体数组中，对结构体排序并输出* 输出：按C++降序和按学号升序排序后的学生成绩单*/#include <iostream>#include <cstring>using namespace std;struct Student{    char num[13];    char name[10];    int cpp;    int math;    int english;    int grade;    int score;    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){  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){int i,j;Student t;for(j=0;j<n-2;j++){        for(i=0;i<n-j-1;i++)            if (s[i].cpp<s[i+1].cpp)    //依C++的成绩进行比较            {                t=s[i];  //交换的是结构体，结构体可以直接赋值，这一点容易被忽视                s[i]=s[i+1];                s[i+1]=t;            }}    return;}void sort2(Student s[],int n){int i,j;Student t;    for(j=0;j<n-2;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){    int i;    for(i=0;i<n;i++)    {        cout<<s[i].num<<","<<s[i].name<<endl;        cout<<s[i].cpp<<","<<s[i].math<<","<<s[i].english<<endl;        cout<<s[i].grade<<","<<s[i].average<<endl;    }    return;}void outputExcellent(Student s[],int n){    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;        }   return;}

改了好多好多好多遍。。。。。啥也不说了。。。。