班级班费管理系统，希望能纠错，最好能完善功能

问题遇到的现象和发生背景

代码无法执行，自己无法修改至能够运行

问题相关代码，请勿粘贴截图

#include<iostream>
#include<string.h>
using namespace std;

class Student
{
private:
    string name;
    string sex;
    double instantFee,                         //现有班费、收入、支出、总班费
public:
    int i = 0;
    Student(string n = "", string s = "", double ins = 0.0)
    {
        name = n;
        sex = s;
        instantFee = ins;
    }
    ~Student()
    {
        cout << name << "的析构函数调用成功" << endl;
    }

    void informationInput(Student stu[])//输入基本信息
    {
        cin >> i;
        cout << "请输入学生的姓名、性别、现有班费" << endl;
        cin >> "姓名：" >> stu[i].name >> "性别： " >> stu[i].sex >> "现有班费： " >> stu[i].instantFee >> endl;
    }

    void informationShow(Student stu[])//输出基本信息
    {
        cin >> i;
        cout << "姓名：" << stu[i].name << endl;
        cout << "性别：" << stu[i].sex << endl;
        cout << "现有班费:" << stu[i].instantFee << endl;
    }

    void informationDelete(Student& stu[])//删除基本信息
    {
        cin >> i;
        free(stu[i]);
    }

    double feeDecrease();//班费支出
    double feeIncrease();//班费收入
    double feeSummary();//总班费
};

double income = 0.0, outcome = 0.0, summary = 0.0;

double Student::feeDecrease(double& outcome,Student stu[])
{
    int i = 0;
    cin >> i;
    cout << "请输入学生及班费的支出" << endl;
    stu[i].instantFee -= stu[i].outcome;
    return instantFee;
}

double Student::feeIncrease(double& income,Student stu[])
{
    int i = 0;
    cin >> i;
    cout << "请输入学生及班费的收入" << endl;
    stu[i].instantFee += stu[i].income;
    return instantFee;
}

void Student::feeSummary(Student& stu[])
{
    for (int i = 1;i <= 5;i++)
    {
        summary += student[i].instantFee;
    }
    cout << summary << endl;
}

int main()
{

    Student stu[5];
    informationInput();
    for (int i = 0; i < 5; i++)
    {
        stu[i].informationShow;
    }
    feeSummary();

    feeIncrease(300.0,stu);
    cout << stu[2].instantFee;
    feeSummary();

    feeDecrease(100.0,stu);
    cout << stu[2].instantFee;
    feeSummary();

    system("pause");
    return 0;
}

运行结果及报错内容

无法运行

我的解答思路和尝试过的方法

我想要达到的结果

纠错后能够运行并且最好能完善一下功能

#include<iostream>
#include<string.h>
using namespace std;
class Student
{
public:
    string name;
    string sex;
    double instantFee;                         //现有班费、收入、支出、总班费
public:
    int i = 0;
    Student(string n = "", string s = "", double ins = 0.0)
    {
        name = n;
        sex = s;
        instantFee = ins;
    }
    ~Student()
    {
        cout << name << "的析构函数调用成功" << endl;
    }
    void informationInput()//输入基本信息
    {
        cin >> i;
        cout << "请输入学生的姓名、性别、现有班费" << endl;
        cin >> name  >> sex  >> instantFee;
    }
    void informationShow()//输出基本信息
    {
        cin >> i;
        cout << "姓名：" << this->name << endl;
        cout << "性别：" << this->sex << endl;
        cout << "现有班费:" << this->instantFee << endl;
    }
    void informationDelete()//删除基本信息
    {
        cin >> i;
        free(this);
    }
    double feeDecrease(double outcome, Student stu[]);//班费支出
    double feeIncrease(double income, Student stu[]);//班费收入
    double feeSummary(Student stu[]);//总班费
};
double income = 0.0, outcome = 0.0, summary = 0.0;
double Student::feeDecrease(double outcome, Student stu[])
{
    int i = 0;
    cin >> i;
    cout << "请输入学生及班费的支出" << endl;
    stu[i].instantFee -= outcome;
    return instantFee;
}
double Student::feeIncrease(double income, Student stu[])
{
    int i = 0;
    cin >> i;
    cout << "请输入学生及班费的收入" << endl;
    stu[i].instantFee += income;
    return instantFee;
}
double Student::feeSummary(Student stu[])
{
    for (int i = 1; i <= 5; i++)
    {
        summary += stu[i].instantFee;
    }
    cout << summary << endl;
    return summary;
}
int main()
{
    Student stu[5];
    //stu[0].informationInput();
    for (int i = 0; i < 5; i++)
    {
        stu[i].informationInput();
        stu[i].informationShow();
        stu[i].feeSummary(stu);
        stu[i].feeIncrease(300.0, stu);
        cout << stu[i].instantFee;
        stu[i].feeSummary(stu);
        stu[i].feeDecrease(100.0, stu);
        cout << stu[i].instantFee;
        stu[i].feeSummary(stu);
    }
    system("pause");
    return 0;
}

看过了，3楼的可行

#include <iostream>
#include <string>
using namespace std;
class Student
{
private:
    string name;
    string sex;
    double instantFee;                         //现有班费、收入、支出、总班费

public:
    Student(string n = "", string s = "", double ins = 0.0)
    {
        name = n;
        sex = s;
        instantFee = ins;
    }
    ~Student()
    {
        cout << name << "的析构函数调用成功" << endl;
    }
    double getInstantFee() // 获取班费
    {
        return instantFee;
    }
    void informationInput()//输入基本信息
    {
        cout << "请输入学生的姓名、性别、现有班费" << endl;
        cin >> name;
        cin >> sex;
        cin >> instantFee;
    }
    void informationShow()//输出基本信息
    {
        cout << "姓名：" << name << endl;
        cout << "性别：" << sex << endl;
        cout << "现有班费:" << instantFee << endl;
    }
    double feeDecrease(double& outcome);//班费支出
    double feeIncrease(double& income);//班费收入
};

double Student::feeDecrease(double& outcome)
{
    instantFee -= outcome;
    return instantFee;
}
double Student::feeIncrease(double& income)
{
    instantFee += income;
    return instantFee;
}
void feeSummary(Student (&stu)[5], int size)
{
    double summary = 0.0;
    for (int i = 1; i <= size;i++)
    {
        summary += stu[i].getInstantFee();
    }
    cout << summary << endl;
}
int main()
{
    Student stu[5];
    for (int i = 0; i < 5; ++i) {
        cout << "请输入第" << (i + 1) << "名学生的姓名、性别、现有班费" << endl;
        stu[i].informationInput();
    }
    for (int i = 0; i < 5; i++)
    {
        cout << "第" << (i + 1) << "名学生信息" << endl;
        stu[i].informationShow();
    }
    feeSummary(stu, 5);
    int i = 0;
    double fee = 0.00;
    cout << "请输入学生及班费的收入" << endl;
    cin >> i;
    cin >> fee;
    cout << "学生现有班费: " << stu[i].feeIncrease(fee) << endl;
    feeSummary(stu, 5);
    cout << "请输入学生及班费的支出" << endl;
    cin >> i;
    cin >> fee;
    cout << "学生现有班费: " << stu[i].feeDecrease(fee) << endl;
    feeSummary(stu, 5);
    system("pause");
    return 0;
}

#include
#include<string.h>
using namespace std;
class Student
{
public:
string name;
string sex;
double instantFee; //现有班费、收入、支出、总班费
public:
int i = 0;
Student(string n = "", string s = "", double ins = 0.0)
{
name = n;
sex = s;
instantFee = ins;
}
~Student()
{
cout << name << "的析构函数调用成功" << endl;
}
void informationInput()//输入基本信息
{
cin >> i;
cout << "请输入学生的姓名、性别、现有班费" << endl;
cin >> name >> sex >> instantFee;
}
void informationShow()//输出基本信息
{
cin >> i;
cout << "姓名：" << this->name << endl;
cout << "性别：" << this->sex << endl;
cout << "现有班费:" << this->instantFee << endl;
}
void informationDelete()//删除基本信息
{
cin >> i;
free(this);
}
double feeDecrease(double outcome, Student stu[]);//班费支出
double feeIncrease(double income, Student stu[]);//班费收入
double feeSummary(Student stu[]);//总班费
};
double income = 0.0, outcome = 0.0, summary = 0.0;
double Student::feeDecrease(double outcome, Student stu[])
{
int i = 0;
cin >> i;
cout << "请输入学生及班费的支出" << endl;
stu[i].instantFee -= outcome;
return instantFee;
}
double Student::feeIncrease(double income, Student stu[])
{
int i = 0;
cin >> i;
cout << "请输入学生及班费的收入" << endl;
stu[i].instantFee += income;
return instantFee;
}
double Student::feeSummary(Student stu[])
{
for (int i = 1; i <= 5; i++)
{
summary += stu[i].instantFee;
}
cout << summary << endl;
return summary;
}
int main()
{
Student stu[5];
//stu[0].informationInput();
for (int i = 0; i < 5; i++)
{
stu[i].informationInput();
stu[i].informationShow();
stu[i].feeSummary(stu);
stu[i].feeIncrease(300.0, stu);
cout << stu[i].instantFee;
stu[i].feeSummary(stu);
stu[i].feeDecrease(100.0, stu);
cout << stu[i].instantFee;
stu[i].feeSummary(stu);
}
system("pause");
return 0;
}

你这个类定义的也不像个类啊
从代码来讲，比如57行，你输入个outcome，但代码里减去的却是结构里的outcome，那参数有啥用呢

报什么错，把报错信息发一下

代码缺点规范！
你目前出现的问题贴下

具体哪方面的报错可以贴一下，方便大家进行讨论

哪个步骤错了，贴一下，楼上贴了代码运行有没有问题，有问题再把问题贴出来大家讨论