c++一个面向对象的评委评分问题
最近做一个大赛评分的小程序，使用面向对象方式做的，代码如下：
#include <iostream>#include <cstring>using namespace std;const unsigned JudgeNum = 5;const unsigned PlayerNum = 5;class CompetitionResult{ short num; //选手号码 char name[10]; //选手姓名 float score[JudgeNum]; //记录各评委给选手的打分 float average; //选手最后得分，去掉一个最高分和一个最低分的平均得分public: CompetitionResult(); //无参构造函数 CompetitionResult(short n,char* ps); //一般构造函数 float MaxScore(); //求评委打的最高分 float MinScore(); //求评委打的最低分 void SavAvg(); //求选手最后得分 float GetAvg() { return average; //读选手最后得分 } short GetNo() { return num; //读选手的编号 } void SetNo(int i) { num=i; //设置选手的编号 }void SetName(char* p) //设置选手姓名{ strcpy(name,p);} char* GetName() { return name; //读选手的姓名 } float GetScore(int j) { return score[j-1]; //读第j个评委的打分 } void SetScore(int k,float av) { score[k-1]=av; //记录第K个评委的打分 } friend void Sort(CompetitionResult* pr,int n); //按最后得分由高到低排序};CompetitionResult::CompetitionResult(){}CompetitionResult::CompetitionResult(short n,char* ps){ num=n; strcpy(name,ps); for(int i=0;i<JudgeNum;i++) score[i]=0.0;}float CompetitionResult::MaxScore(){ unsigned i,j; for(i=0; i<JudgeNum; i++) for(j=0; j<JudgeNum-i; j++) if(GetScore(j)>GetScore(j+1)) { score[j-1]+=score[j]; score[j]=score[j-1]-score[j]; score[j-1]=score[j-1]-score[j]; } return score[JudgeNum-1];}float CompetitionResult::MinScore(){ unsigned i,j; for(i=0; i<JudgeNum; i++) for(j=0; j<JudgeNum-i; j++) if(GetScore(j)>GetScore(j+1)) { score[j-1]+=score[j]; score[j]=score[j-1]-score[j]; score[j-1]=score[j-1]-score[j]; } return score[0];}void CompetitionResult::SavAvg(){ int i; float sum=0.0; for(i=1; i<=JudgeNum; i++) sum+=GetScore(i); sum=sum-MaxScore()-MinScore(); average=sum/(JudgeNum-2);}void Sort(CompetitionResult* pr,int n){ int i,j; CompetitionResult temp; for(i=0;i<n-1;i++) for(j=0;j<n-1-i;j++) if(pr[j].GetAvg()<pr[j+1].GetAvg()) { temp=pr[j]; pr[j]=pr[j+1]; pr[j+1]=temp; } cout<<n<<"个选手排名为:"<<endl; for(i=0; i<n-1; i++) { cout<<"第"<<i+1<<"名："; cout<<"选手"<<pr[i].num<<"号,"; cout<<"姓名"<<pr[i].GetName()<<","; cout<<"得分"<<pr[j].average<<endl; }}int main(){ CompetitionResult pr[PlayerNum]; unsigned i,j; float scorein=0.0; char p[10]="Noname";//CompetitionResult(); /*for(i=0;i<PlayerNum;i++) CompetitionResult pr[i](0,p);*/ for(i=0; i<PlayerNum;i++) { cout<<"请输入第"<<i+1<<"位的姓名(不超过10个字符):"<<endl; cin>>p; pr[i].SetName(p); cout<<"请为第"<<i+1<<"位选手打分: "<<endl; pr[i].SetNo(i+1); for(j=0;j<JudgeNum;j++) { cin>>scorein; pr[i].SetScore(j+1,scorein); } }cout<<"***********************"<<endl; for(j=0; j<PlayerNum; j++) { cout<<"编号"<<j+1<<endl; cout<<"最高分:"; cout<<pr[j].MaxScore()<<endl; cout<<"最低分:"; cout<<pr[j].MinScore()<<endl; cout<<"平均分:"; pr[j].SavAvg(); cout<<pr[j].GetAvg()<<endl; cout<<"***********************"<<endl; } Sort(pr,PlayerNum); return 0;}但是在编译运行后，排名时的平均分和求出来的平均分不一样，我不知道是不是交换值后原有的average被冲掉了，大家看看出错在什么地方。谢谢！