项目结构
选手类（Player）
操作类（System) // 老师说最好别用这个名字，以后一定要注意这个问题
Player类
这一部分代码是写在头文件里的
#define TheJudgesNum 10
class Player
{
private:
public:
char num[20];
char name[20];
int score[TheJudgesNum];
float sum;
float ave;
Player *next;
Player();
~Player();
int getMaxScore();
int getMinScore();
};
Player.cpp立马跟上
#include "Player.h"
#include <iostream>
using namespace std;
int Player::getMaxScore() {
int Maxscore = score[0];
for (int i = 1; i < TheJudgesNum; i++) {
if (score[i] > Maxscore) {
Maxscore = score[i];
}
}
return Maxscore;
}
int Player::getMinScore() {
int Minscore = score[0];
for (int i = 1; i < TheJudgesNum; i++) {
if (score[i] < Minscore) {
Minscore = score[i];
}
}
return Minscore;
}
Player::Player()
{
for (int i = 0; i < TheJudgesNum; i++) {
score[i] = 0;
}
sum = 0;
ave = 0;
}
Player::~Player()
{
}emmm怎么不是4个字符缩进，看起来好奇怪
System类
#pragma once
#include"Player.h"
class System
{
private:
int PlayerNum;
Player *Head;
Player *End;
public:
void Interface();
void Run();
void InputPlayerInformation();
void OutputPlayerInformation();
void GiveScore();
void Sort();
void Swap(Player *A,Player *B);
bool Search(char ch[20],int i);
void WriteDataFile();
void AddPlayerInformation();
void ReadDataFile();
System();
~System();
};System.cpp
#include "Player.h"
#include "System.h"
#include <string>
#include <fstream>
#include <iostream>
using namespace std;
void System::Interface() {
cout << endl;
cout << " ***************菜单****************" << endl;
cout << " *** 1——录入选手信息 ***" << endl;
cout << " *** 2——信息输出 ***" << endl;
cout << " *** 3——评委打分 ***" << endl;
cout << " *** 4——成绩排序（平均分） ***" << endl;
cout << " *** 5——数据查询 ***" << endl;
cout << " *** 6——追加选手信息 ***" << endl;
cout << " *** 7——写入数据文件 ***" << endl;
cout << " *** 0——退出系统 ***" << endl;
cout << " ***********************************" << endl;
cout << endl;
cout << " ***********************************" << endl;
cout << " *** 请选择想要进行的操作 ***" << endl;
cout << " ***********************************" << endl;
}
void System::Run() {
int choice = 1;
while (choice) {
Interface();
cin >> choice;
if (choice > 7 || choice < 0) {
cout << " ***********************************" << endl;
cout << " *** 选择操作有误，请重新输入 ***" << endl;
cout << " ***********************************" << endl;
continue;
}
switch (choice)
{
case 1:
int k;
cout << " ***********************************" << endl;
cout << " *** 1——输入选手信息 ***" << endl;
cout << " *** 2——读取选手信息 ***" << endl;
cout << " *** 请选择想要进行的操作 ***" << endl;
cout << " ***********************************" << endl;
cin >> k;
if (k == 1) {
InputPlayerInformation();
}else if(k == 2){
ReadDataFile();
}
break;
case 2:
OutputPlayerInformation();
break;
case 3:
GiveScore();
break;
case 4:
Sort();
break;
case 5:
cout << " ***********************************" << endl;
cout << " *** 请选择想要查找的方式 ***" << endl;
cout << " *** 1——编号查找 ***" << endl;
cout << " *** 2——姓名查找 ***" << endl;
cout << " ***********************************" << endl;
int i;
cin >> i;
if (i == 1) {
char num[20];
cout << " ***********************************" << endl;
cout << " *** 请输入想要查找的选手编号 ***" << endl;
cout << " ***********************************" << endl;
cin >> num;
if (!Search(num, i)) {
cout << " ***********************************" << endl;
cout << " *** 无此选手信息 ***" << endl;
cout << " ***********************************" << endl;
}
}
else if (i == 2) {
char name[20];
cout << " ***********************************" << endl;
cout << " *** 请输入想要查找的选手姓名 ***" << endl;
cout << " ***********************************" << endl;
cin >> name;
if (!Search(name, i)) {
cout << " ***********************************" << endl;
cout << " *** 无此选手信息 ***" << endl;
cout << " ***********************************" << endl;
}
}
break;
case 6:
AddPlayerInformation();
break;
case 7:
WriteDataFile();
break;
}
}
}
void System::InputPlayerInformation() {
cout << endl;
cout << " ***********************************" << endl;
cout << " *** 请输入选手个数 ***" << endl;
cout << " ***********************************" << endl;
cin >> PlayerNum;
for (int i = 0; i < PlayerNum; i++) {
cout << endl;
cout << " ***********************************" << endl;
cout << " *** 请输入第" << i + 1 << "选手编号、姓名 ***" << endl;
cout << " ***********************************" << endl;
cin >> End->num >> End->name;
while (Search(End->num, 1) || Search(End->name, 2)) {
cout << " ***********************************" << endl;
cout << " 已有此编号，请重新输入 " << endl;
cout << " ***********************************" << endl;
cin >> End->num >> End->name;
}
End->next = new Player;
End = End->next;
}
cout << endl;
cout << " ***********************************" << endl;
cout << " *** 录入完成 ***" << endl;
cout << " ***********************************" << endl;
}
void System::OutputPlayerInformation() {
if (Head->next == End) {
cout << endl;
cout << " ***********************************" << endl;
cout << " *** 对不起，没有选手信息 ***" << endl;
cout << " ***********************************" << endl;
return;
}
Player *player;
player = Head->next;
cout << "************************************" << endl;
cout << " 编号 姓名 总分 平均分" << endl;
for (int i = 0; i < PlayerNum; i++) {
cout << "" << player->num <<" " << player->name <<" " << player->sum << " " << player->ave << " " << endl;
player = player->next;
}
}
void System::GiveScore() {
Player *player;
player = Head->next;
if (PlayerNum == 0) {
cout << " ***********************************" << endl;
cout << " *** 请先录入选手信息 ***" << endl;
cout << " ***********************************" << endl;
}
for (int i = 0; i < PlayerNum; i++) {
cout << " ***********************************" << endl;
cout << " 请评委为选手" << player->name << "打分 " << endl;
cout << " ***********************************" << endl;
cout << endl;
cout << endl;
for (int j = 0; j < TheJudgesNum; j++) {
cout << " ***********************************" << endl;
cout << " 请输入第" << j + 1 << "个评委给分 " << endl;
cout << " ***********************************" << endl;
cin >> player->score[j];
cout << endl;
player->sum += player->score[j];
}
player->sum = player->sum - player->getMaxScore() - player->getMinScore();
player->ave = player->sum / (TheJudgesNum - 2);
cout << " ***********************************" << endl;
player = player->next;
}
}
void System::Sort() {
//以平均分为关键字进行降序排列
Player *player;
if (PlayerNum == 0) {
cout << " ***********************************" << endl;
cout << " *** 请先录入选手信息 ***" << endl;
cout << " ***********************************" << endl;
return;
}
for (int i = 0; i < PlayerNum; i++) {
player = Head->next;
for (int j = 0; j < PlayerNum - 1 - i; j++) {
if (player->ave < player->next->ave)
{
Swap(player, player->next);
}
player = player->next;
}
}
cout << endl;
cout << " ***********************************" << endl;
cout << " *** 成绩排序成功，请查看 ***" << endl;
cout << " ***********************************" << endl;
}
void System::Swap(Player *A, Player *B) {
Player *Temp = End;
strcpy_s(Temp->num, A->num);
strcpy_s(Temp->name, A->name);
//
strcpy_s(A->num, B->num);
strcpy_s(A->name, B->name);
//
strcpy_s(B->num, Temp->num);
strcpy_s(B->name, Temp->name);
//
Temp->sum = A->sum;
Temp->ave = A->ave;
//
A->sum = B->sum;
A->ave = B->ave;
//
B->sum = Temp->sum;
B->ave = Temp->ave;
for (int i = 0; i < TheJudgesNum; i++) {
Temp->score[i] = A->score[i];
A->score[i] = B->score[i];
B->score[i] = Temp->score[i];
}
}
bool System::Search(char ch[20], int i) {
Player *player = Head->next;
if (i == 1) {
while (player != End && strcmp(ch, player->num) != 0)
{
player = player->next;
}
}
else if (i == 2) {
while (player != End && strcmp(ch, player->name) != 0)
{
player = player->next;
}
}
if (player != End) {
int choice;
cout << " ***********************************" << endl;
cout << " *** 找到该选手 ***" << endl;
cout << " *** 1——输出选手信息 ***" << endl;
cout << " *** 2——不输出选手信息 ***" << endl;
cout << " ***********************************" << endl;
cin >> choice;
if (choice == 1) {
cout << " ***********************************" << endl;
cout << " ****编号***姓名***总分***平均分****" << endl;
cout << " " << player->num << " " << player->name << " " << player->sum << " " << player->ave << " " << endl;
cout << " ***********************************" << endl;
}
return true;
}
else
{
return false;
}
}
void System::WriteDataFile() {
//定义文件输出流
ofstream oFile;
Player *player = Head->next;
if (PlayerNum == 0) {
cout << " ***********************************" << endl;
cout << " *** 数据文件写入失败 ***" << endl;
cout << " ***********************************" << endl;
return;
}
//打开要输出的文件
oFile.open("歌手大赛选手得分信息统计表.csv", ios::out | ios::trunc); // 这样就很容易的输出到一个excel文件里
oFile << "编号" << "," << "姓名" << ",";
for (int i = 0; i < TheJudgesNum; i++) {
oFile << "评委" << i + 1 << ",";
}
oFile << "总分" << "," << "平均分" << endl;
for (int i = 0; i < PlayerNum; i++) {
oFile << player->num << "," << player->name << ",";
for (int j = 0; j < TheJudgesNum; j++) {
oFile << player->score[j] << ",";
}
oFile << player->sum << "," << player->ave << endl;
player = player->next;
}
oFile.close();
cout << " ***********************************" << endl;
cout << " *** 数据文件写入完成 ***" << endl;
cout << " ***********************************" << endl;
//打开要输出的文件 用输入的方式输出
//ifstream iFile("scoresheet.csv");
//string readStr((std::istreambuf_iterator<char>(iFile)), std::istreambuf_iterator<char>());
//cout << readStr.c_str();
}
void System::AddPlayerInformation() {
cout << " ***********************************" << endl;
cout << " *** 请输入追加选手的编号、姓名 ***" << endl;
cout << " ***********************************" << endl;
cin >> End->num >> End->name;
while (Search(End->num, 1)) {
cout << " ***********************************" << endl;
cout << " 已有此编号，请重新输入 " << endl;
cout << " ***********************************" << endl;
cin >> End->num >> End->name;
}
cout << " ***********************************" << endl;
cout << " *** 请输入追加选手的评委打分情况***" << endl;
cout << " ***********************************" << endl;
for (int i = 0; i < TheJudgesNum; i++) {
cout << " ***********************************" << endl;
cout << " 请输入第" << i + 1 << "个评委给分 " << endl;
cout << " ***********************************" << endl;
cin >> End->score[i];
End->sum += End->score[i];
}
End->sum = End->sum - End->getMaxScore() - End->getMinScore();
End->ave = End->sum / (TheJudgesNum - 2);
PlayerNum++;
End->next = new Player;
End = End->next;
cout << " ***********************************" << endl;
cout << " *** 追加成功 ***" << endl;
cout << " ***********************************" << endl;
}
void System::ReadDataFile() {
ifstream inFile("歌手大赛选手得分信息统计表.csv", ios::in);
string str;
if (inFile.fail()) {
cout << " ***********************************" << endl;
cout << " *** 找不到文件 ***" << endl;
cout << " ***********************************" << endl;
return;
}
//getline(inFile,str);
while (getline(inFile, str) && inFile.good()) {
//.csv文件用","作为分隔符
PlayerNum++;
getline(inFile, str, ',');
strcpy_s(End->num, str.c_str());
getline(inFile, str, ',');
strcpy_s(End->name, str.c_str());
End->next = new Player;
End = End->next;
}
inFile.close();
}
System::System()
{
PlayerNum = 0;
Head = new Player;
Head->next = new Player;
End = Head->next;
}
System::~System()
{
delete Head, End;
}以上就是主要的代码
最后在Main.cpp里进行运行
Main.cpp
#include "System.h"
int main()
{
System s;
s.Run();
return 0;
}大概就是这些，都是自己一步一步做出来的，学习在于积累，加油，永远别说不知道，不知道就去学！!!
来源：CSDN
作者：深呐
链接：https://blog.csdn.net/qq_43643704/article/details/103743889