cpp:Double Dimensional Array using vector 2

 

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// StudentArry.h : 此文件包含 "StudentArry" 类。学生数组成绩显示方法 C++ 14 // 2023年4月9日 涂聚文 Geovin Du edit. //（1）vec1.size() 就是”二维数组”的行数 //（2）vec1[0].size() 就是”二维数组”的列数 //vector<vector<double>> geovindu     #pragma once #ifndef STUDENTARRY_H #define STUDENTARRY_H   #include <iostream> #include <string> #include <vector> #include <memory> #include <iostream> #include <string> #include <ctime> #include <cstdlib> #include <list> #include<algorithm>   using namespace std;     /** * */ namespace geovindu {         /// <summary>     /// 学生数组成绩显示方法     /// </summary>     class StudentArry     {       private:                 public:         /// <summary>         /// 学生成绩         /// </summary>         void displayStudent();         /// <summary>         ///  学生成绩  无效         /// </summary>         /// <param name="name">学生姓名列表</param>         /// <param name="Subject">课程列表</param>         /// <param name="ScoreList">分数列表</param>         void displayStudent(string name[5], string Subject[5], int ScoreList[5][4]);         /// <summary>         ///  学生成绩         /// </summary>         /// <param name="name">学生姓名列表</param>         /// <param name="Subject">课程列表</param>         /// <param name="ScoreList">分数列表</param>         void displayStudentVector(vector<string> name, vector<string>Subject, vector<vector<int>> ScoreList);           /// <summary>         /// 获取数组排序的索引列表         /// </summary>         /// <param name="sortvecotrs"></param>         /// <returns></returns>         //vector<int> sort(vector<int> sortvecotrs);                     /// <summary>         ///         /// </summary>         /// <param name="source"></param>         /// <returns></returns>         vector<int> setSort(vector<int> source);             int getIndex(vector<int> sortvecotrs, int index);       };   }   #endif

　　

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// StudentArry.cpp : //练习案例：学生数组成绩显示方法  StudentArry //案例描述：学生数组成绩显示方法     #include "StudentArry.h"   #include <iostream> #include <string> #include <vector> #include <memory> #include <iostream> #include <list> #include<algorithm>   using namespace std;     /**  * @brief  * \author geovindu.  * \date 20230-4-10  */ namespace geovindu {             /// <summary>     ///     /// </summary>     typedef struct     {         int index; //原索引值         int value; //值     }sort_st;       /// <summary>     ///     /// </summary>     /// <param name="a"></param>     /// <param name="b"></param>     /// <returns></returns>     bool compare(sort_st a, sort_st b)     {         return a.value > b.value; //升序排列，如果改为return a.value<b.value，则为降序     }       struct node     {         double data;         int No;     };       int comp(const void* a, const void* b)     {         return (*(struct node*)a).data > (*(struct node*)b).data ? 1 : -1;     }     /// <summary>     ///     /// </summary>     /// <param name="sortvecotrs"></param>     /// <returns></returns>     //vector<int> sort(vector<int> sortvecotrs)     //{       //  //vector <int> temp = sortvecotrs;// { 11, 3, 2, 14 };     //  vector <sort_st> sort_array(sortvecotrs.size());     //  for (int i = 0; i < sortvecotrs.size(); ++i) {     //      sort_array[i].index = i;     //      sort_array[i].value = sortvecotrs[i];     //  }     //  //从小至大     //  sort(sort_array.begin(), sort_array.end(), compare);       //  return sort_array;       //}       /// <summary>     /// 学生成绩     /// 数组用法     /// </summary>     void StudentArry::displayStudent()     {           ///         int SubjectScore = 0;         //         int grossScore = 0;           string name[5] = { "张三","李四","王五","涂聚文","Geovin" };         const int nameCount = size(name);         string Subject[4] = { "语文","数学","英语","物理" };         const int SubjectCount = size(Subject);         string strname = "";         //前人个数nameCount 后分数个数SubjectCount         int ScoreList[nameCount][SubjectCount] = { { 100,100,100,99 },{ 90,50,100,60 },{ 60,70,80,77 },{ 10,20,50,17 },{ 60,90,40,87 } };           //表标题         cout << "\t";         for (int i = 0; i < SubjectCount; i++)         {               cout << Subject[i] + "\t";           }         cout << "总分\t名次";         cout << endl;             //求总成绩的数组及排名次         vector <int> temp;         //vector<size_t> idx;         std::vector<int> du;         for (int i = 0; i < nameCount; i++)         {             grossScore = 0;             //cout << name[i] << "\t";             for (int j = 0; j < SubjectCount; j++)             {                 //显示行各人成绩                 //cout << ScoreList[i][j] << "\t";                 grossScore = grossScore + ScoreList[i][j];             }             //cout << grossScore << "\t";             //cout << endl;             temp.push_back(grossScore);         }         //du=sort(temp);            du=setSort(temp);           //内容列表         for (int i = 0; i < nameCount; i++)         {             grossScore = 0;             cout << name[i] << "\t";             for (int j = 0; j < SubjectCount; j++)             {                 cout << ScoreList[i][j] << "\t";                 grossScore = grossScore + ScoreList[i][j];             }             cout << grossScore << "\t";;             int ii = getIndex(du,i);             cout << ii;             cout << endl;           }         //求总分和平均分         int sum = 0;         int ver[SubjectCount];         cout << "科总分  ";         for (int i = 0; i < SubjectCount; i++)         {             SubjectScore = 0;             for (int j = 0; j < nameCount; j++)             {                 SubjectScore = SubjectScore + ScoreList[j][i];             }             sum = sum + SubjectScore;             ver[i] = SubjectScore / nameCount;             cout << SubjectScore << "\t";         }         cout << sum;         cout << endl;         //显示平均分行         cout << "平均分  ";         for (int i = 0; i < SubjectCount; i++)         {             cout << ver[i] << "\t";         }         cout << endl;         cout << "***********************************" << endl;           /*         for (int i = 0; i < 3; i++)         {             ge = 0;             for (int j = 0; j < 3; j++)             {                 ge = ge + chengji[i][j];               }               strname = name[i] + to_string(ge);             cout << name[i] << "个人总分:" << ge << endl;             //cout <<"个人总分："<< strname << endl;               yuwen = 0;             for (int j = 0; j < 3; j++)             {                 yuwen = yuwen + chengji[j][i];               }             cout << cheng[i] << "课程总分数:" << yuwen << endl;           }         */         }     /// <summary>     ///  学生成绩 无效     /// </summary>     /// <param name="name">学生姓名列表</param>     /// <param name="Subject">课程列表</param>     /// <param name="ScoreList">分数列表</param>     void StudentArry::displayStudent(string name[5], string Subject[4], int ScoreList[5][4])     {         //         int SubjectScore = 0;         //         int grossScore = 0;         const int nameCount = sizeof(name);         const int SubjectCount = sizeof(Subject);         string strname = "";         //表标题         cout << "\t";         for (int i = 0; i < SubjectCount; i++)         {               cout << Subject[i] + "\t";           }         cout << "总分";         cout << endl;         //内容列表         for (int i = 0; i < nameCount; i++)         {             grossScore = 0;             cout << name[i] << "\t";             for (int j = 0; j < SubjectCount; j++)             {                 cout << ScoreList[i][j] << "\t";                 grossScore = grossScore + ScoreList[i][j];             }             cout << grossScore;             cout << endl;           }         //求总分和平均分         int sum = 0;         int ver[SubjectCount];         cout << "科总分  ";         for (int i = 0; i < SubjectCount; i++)         {             SubjectScore = 0;             for (int j = 0; j < nameCount; j++)             {                 SubjectScore = SubjectScore + ScoreList[j][i];             }             sum = sum + SubjectScore;             ver[i] = SubjectScore / nameCount;             cout << SubjectScore << "\t";         }         cout << sum;         cout << endl;         //显示分均分行         cout << "平均分  ";         for (int i = 0; i < SubjectCount; i++)         {             cout << ver[i] << "\t";         }         cout << endl;         cout << "***********************************" << endl;             }     /// <summary>     ///     /// </summary>     /// <typeparam name="T"></typeparam>     /// <param name="v"></param>     /// <returns></returns>     template < typename T>     vector< size_t>  sort_indexes(const vector< T>& v) {           // initialize original index locations         vector< size_t>  idx(v.size());         for (size_t i = 0; i != idx.size(); ++i) idx[i] = i;           // sort indexes based on comparing values in v         sort(idx.begin(), idx.end(),             [&v](size_t i1, size_t i2) {return v[i1] < v[i2]; });           return idx;     }       /// <summary>     ///     /// </summary>     /// <param name="sortvecotrs"></param>     /// <returns></returns>     vector<int> sort(vector<int> sortvecotrs)     {         vector<int> data = sortvecotrs;           vector<int> indexdu(sortvecotrs.size(), 0);           for (int i = 0; i != indexdu.size(); i++) {             indexdu[i] = i;         }                   sort(indexdu.begin(), indexdu.end(),[&](const int& a, const int& b)             {                 return (data[a] < data[b]);             }         );         //反向排序         //sort(indexdu.rbegin(), indexdu.rend());         //qsort()         return indexdu;       }       /// <summary>     ///     /// </summary>     /// <param name="source"></param>     /// <returns></returns>     vector<int> StudentArry::setSort(vector<int> source)     {           //double a[] = { 3.0, 4.0, 2.5,1.1, 5.6 };         /*         int n = source.size();// sizeof(a) / sizeof(double);         struct node arry[sizeof(source) / sizeof(int)];         int i;         for (i = 0; i < n; ++i)         {             arry[i].data = source[i];             arry[i].No = i;         }         qsort(arry, n, sizeof(struct node), comp);         */                   /**          *          * printf("(当前值，原索引)\n");     for(i = 0; i < n;++i)     {         cout<<arry[i].data<<"\t"<<a[i]<<"\t"<<arry[i].No<<endl;     }.          *          * \param source          * \return          */             vector<int> index(source.size(), 0);         for (int i = 0; i != index.size(); i++) {             index[i] = i;         }         sort(index.begin(), index.end(),             [&](const int& a, const int& b) {                 return (source[a] >source[b]);  //< 升  //降             }         );                       return index;       }       /// <summary>     /// 根据原索引值得到排名次     /// </summary>     /// <param name="sortvecotrs"></param>     /// <param name=""></param>     /// <returns></returns>     int StudentArry::getIndex(vector<int> sortvecotrs,int index)     {         int ii = 0;         for (int i = 0; i != sortvecotrs.size(); i++) {               if (sortvecotrs[i] == index)             {                 ii = i + 1;             }             //cout <<"索引值：" << sortvecotrs[i] << "  名次:" << i + 1 << endl;         }         return ii;     }       /// <summary>     ///  学生成绩 vector容器     /// </summary>     /// <param name="name">学生姓名列表</param>     /// <param name="Subject">课程列表</param>     /// <param name="ScoreList">分数列表</param>     void StudentArry::displayStudentVector(vector<string> name, vector<string>Subject, vector<vector<int>> ScoreList)     {               //         int SubjectScore = 0;               //         int grossScore = 0;         const int nameCount = name.size();         const int SubjectCount = Subject.size();         //const int vCout = SubjectCount;// Subject.size();         const int geovindu= Subject.size();         string strname = "";         //表标题         cout << "\t";         for (int i = 0; i < SubjectCount; i++)         {               cout << Subject[i] + "\t";           }         cout << "总分\t名次";         cout << endl;             //求总成绩的数组及排名次         vector <int> temp;         //vector<size_t> idx;         std::vector<int> du;         for (int i = 0; i < nameCount; i++)         {             grossScore = 0;             //cout << name[i] << "\t";             for (int j = 0; j < SubjectCount; j++)             {                 //显示行各人成绩                 //cout << ScoreList[i][j] << "\t";                 grossScore = grossScore + ScoreList[i][j];             }             //cout << grossScore << "\t";             //cout << endl;             temp.push_back(grossScore);         }         //du=sort(temp);           du = setSort(temp);                 //内容列表         for (int i = 0; i < nameCount; i++)         {             grossScore = 0;             cout << name[i] << "\t";             for (int j = 0; j < SubjectCount; j++)             {                 //显示行各人成绩                 cout << ScoreList[i][j] << "\t";                 grossScore = grossScore + ScoreList[i][j];             }             cout << grossScore << "\t";             int ii = getIndex(du, i);             cout << ii;             cout << endl;           }         //增加行         //求总分和平均分         int sum = 0;         const int vcout = Subject.size();         int* verScore =new int[vcout];         cout << "科总分  ";         for (int i = 0; i < SubjectCount; i++)         {             SubjectScore = 0;             for (int j = 0; j < nameCount; j++)             {                 SubjectScore = SubjectScore + ScoreList[j][i];             }             sum = sum + SubjectScore;             verScore[i] = SubjectScore / nameCount;             cout << SubjectScore << "\t";         }         cout << sum;         cout << endl;         //显示分均分行         cout << "平均分  ";         for (int i = 0; i < SubjectCount; i++)         {             cout << verScore[i] << "\t";         }         cout << endl;         cout << "**vector容器*********************************" << endl;                   }   }

　　

 

 

 

 

 

 

存储在text文件中的中文需要考虑转码问题。

 程序文件编码为BGK和text文件编码为ANSI解决

 解决中文CIN,WCIN输入问题。已经解决输入输出问题

 

错误 C4996 'fopen': This function or variable may be unsafe. Consider using fopen_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details. ConsoleTextFileDemoApp C:\Users\geovindu\Documents\Visual Studio 2022\Project\ConsoleTextFileDemoApp\FileHelper.cpp 75

 

首行加入： #define _CRT_SECURE_NO_WARNINGS