第十三周项目三函数模版

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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：于凯*完成日期：2014年 11 月 25 日 *版本号：v1.0 * *问题描述： */  #include <iostream>  #include <cmath>  using namespace std;  void input_score(int s[], int n);  int get_max_score(int s[], int n); int get_min_score(int s[], int n);    double get_avg_score(int s[], int n); double get_stdev_score(int s[], int n); int count(int x, int s[], int n);double average;  void output_index(int x, int s[], int n); int main(void)  {      int score[50];     int num;           int max_score,min_score;      cout<<"小组共有多少名同学?"<< endl;      cin>>num;      cout<<endl<<"请输入学生成绩："<<endl;      input_score(score, num);       max_score=get_max_score(score, num);      cout<<endl<<"最高成绩为："<<max_score<<"，共有 "<<count(max_score, score, num )<<" 人";      min_score=get_min_score(score, num);      cout<<endl<<"最低成绩为："<<min_score<<"，共有 "<<count(min_score,score, num )<<" 人"      cout<<endl<<"平均成绩为："<<get_avg_score(score, num);      cout<<endl<<"标准偏差为："<<get_stdev_score(score, num);      cout<<endl<<"获最高成绩的学生(学号)有：";      output_index(max_score,score, num);      cout<<endl<<"获最低成绩的学生(学号)有：";      output_index(min_score,score, num);      cout<<endl;      return 0;  }    void input_score(int score[], int num)  {      for (int i=0; i<num; ++i)      {          cout << "请输入学号为" << i << "的同学的成绩：";          cin >> score[i];          while(score[i]<0 || score[i]>100)          {              cout << "数据错误，成绩应在0-100之内，重新输入：";              cin >> score[i];          }      }      cout << endl;  }    int get_max_score(int score[], int num) {      int max=0;      for (int i=0; i<num; ++i)      {          if (score[i]>max)              max=score[i];      }      return max;  }    int get_min_score(int score[], int num)  {      int min=100;      for (int i=0; i<num; ++i)      {          if (score[i]<min)              min=score[i];      }      return min;  }    double get_avg_score(int score[], int num) {      double sum=0;      for (int i=0; i<num; ++i)          sum+=score[i];      average=sum/num;      return average;  }    double get_stdev_score(int score[], int num) {      double s=0,S;      for (int i=0; i<num; ++i)      {          double x=pow(score[i]-average,2);          s+=x;      }      S=sqrt(s/(num-1));      return S;  }    int count(int x, int score[], int num)     int n=0;      for (int i=0; i<num; ++i)      {          if(x==score[i])              ++n;      }      return n;  }    void output_index(int x, int score[], int num)   {      for (int i=0; i<num; ++i)      {          if(x==score[i])              cout<<i<<" ";      }  }
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