C++报错，应输入“；”，但实际上不缺少分号

这个提示缺少分号，但应该没少啊

#include <algorithm>
#include <fstream>
#include <iostream>
#include <string>
using namespace std;
// 学生结构体
struct Student {
    string id; // 学号
    string name; // 姓名
    double chinese; // 语文成绩
    double math; // 数学成绩
    double english; // 英语成绩
    double average; // 考试成绩
    int rank; // 考试名次
    double peer_score; // 同学互评分
    double morality_score; // 品德成绩
    double teacher_score; // 任课教师评分
    double total_score; // 综合测评总分
    int total_rank; // 综合测评名次
};

const int MAX_STUDENT_NUM = 1000;
Student studentss[MAX_STUDENT_NUM]; // 学生数组
int student_num = 0; // 学生数

// 按照从大到小的顺序比较学生成绩，用于排序
bool compare_averages(const Student& s1, const Student& s2)
{
    return s1.average > s2.average;
}

// 按照从大到小的顺序比较学生总分，用于排序
bool compare_total_scores(const Student& s1, const Student& s2)
{
    return s1.total_score > s2.total_score;
}

// 读入学生信息
void read_studentss()
{
    ifstream fin("students.txt"); // 打开文件

    // 从文件中读取每个学生的信息
    while (fin >> studentss[student_num].id >> studentss[student_num].name >> studentss[student_num].chinese >> studentss[student_num].math >> studentss[student_num].english>> studentss[student_num].peer_score>> studentss[student_num].morality_score >> studentss[student_num].teacher_score)
    {
        student_num++;
    }
    fin.close(); // 关闭文件
}


// 计算学生考试成绩和名次
void calc_exam_score_and_rank()
{
    for (int i = 0; i < student_num; i++)
    {
        studentss[i].average = (studentss[i].chinese + studentss[i].math + studentss[i].english) / 3.0; // 计算考试成绩
    }

    sort(studentss, studentss + student_num, compare_averages); // 按照考试成绩排序

    // 计算考试名次
    for (int i = 0; i < student_num; i++)
    {
        if (i == 0)
        {
            studentss[i].rank = 1;
        }
        else if (studentss[i].average == studentss[i - 1].average)
        {
            studentss[i].rank = studentss[i - 1].rank;
        }
        else
        {
            studentss[i].rank = i + 1;
        }
    }
}

// 计算学生综合测评总分和名次
void calc_total_score_and_rank() {
    for (int i = 0; i < student_num; i++) {
        studentss[i].total_score = studentss[i].average * 0.6 + studentss[i].peer_score * 0.1
            + studentss[i].morality_score * 0.1 + studentss[i].teacher_score * 0.2; // 计算综合测评总分
    }

    sort(studentss, studentss + student_num, compare_total_scores); // 按照综合测评总分排序

    // 计算综合测评名次
    for (int i = 0; i < student_num; i++) {
        if (i == 0) {
            studentss[i].total_rank = 1;
        }
        else if (studentss[i].total_score == studentss[i - 1].total_score) {
            studentss[i].total_rank = studentss[i - 1].total_rank;
        }
        else {
            studentss[i].total_rank = i + 1;
        }
    }
}

// 查询学生信息
void query_student_info()
{   int count;
    string id;
    cout << "请输入学号：";
    cin >> id;
    bool found = false;
    for (int i = 0; i < count; i++)
    {
        if (studentss[i].id == id)
        {
            cout << "学号：" << studentss[i].id << endl;
            cout << "姓名：" << studentss[i].name << endl;
            cout << "语文成绩：" << studentss[i].chinese << endl;
            cout << "数学成绩：" << studentss[i].math << endl;
            cout << "外语成绩：" << studentss[i].english << endl;
            cout << "考试平均成绩：" << studentss[i].average << endl;
            cout << "考试名次：" << studentss[i].rank << endl;
            cout << "同学互评分：" << studentss[i].peer_score << endl;
            cout << "品德成绩：" << studentss[i].morality_score << endl;
            cout << "任课教师评分：" << studentss[i].teacher_score << endl;
            cout << "综合测评总分：" << studentss[i].total_score << endl;
            cout << "综合测评名次：" << studentss[i].total_rank << endl;

            found = true;
            break;
        }
    }

    if (!found)
    {
        cout << "没有找到对应学生信息！" << endl;
    }
}
//修改学生信息
void modify_student_info（Student studentss[], int count）
{
    string id;
    cout << "请输入学号：";
    cin >> id;
    bool found = false;
    for (int i = 0; i < count; i++)
    {
        if (studentss[i].id == id)
        {
            cout << "请输入新的语文成绩：";
            cin >> studentss[i].chinese;
            cout << "请输入新的数学成绩：";
            cin >> studentss[i].math;
            cout << "请输入新的英语成绩：";
            cin >> studentss[i].english;
            cout << "请输入新的同学互评分：";
            cin >> studentss[i].peer_score;
            cout << "请输入新的品德成绩：";
            cin >> studentss[i].morality_score;
            cout << "请输入新的任课教师评分：";
            cin >> studentss[i].teacher_score;

            // 重新计算该学生的信息
            studentss[i].average = (studentss[i].chinese + studentss[i].math + studentss[i].english) / 3.0
        }
    }
}
void bSystem()
{
                cout << "进入学生数据信息处理系统" << endl;
                int selectA = 0;
                while (selectA != 3)
                {
                    cout << endl;
                    cout << "1. 查询数据 " << endl;
                    cout << "2. 修改数据" << endl;
                    cout << "3. 退出子系统" << endl;
                    cout << endl << endl;// 输入
                    cin >> selectA;
                    cout << "您输入的是 " << selectA << endl;
                    Student studentss[MAX_STUDENT_NUM]; // 学生数组
                    void read_students();
                    if (selectA == 1)
                    {
                        query_student_info(Student studentss[], int count);
                    }
                    else if (selectA == 2)
                    {
                        modify_student_info（Student studentss[], int count）
                    }
                    else if (selectA == 3)
                    {
                        break;
                    }
                    else
                    {
                        cout << "错误的输入，请重新输入！" << endl;
                    }
                }
            }
}
int main()
{
    void bSystem(Student studentss[])
        return 0;
}

把 代码缩进弄一下，你就能看到 bSystem 方法多了一个 右花括号
主函数中 bSystem 调用，
还有 bSystem函数中 其他方法调用 ，有你这么写的嘛？
modify_student_info 函数 的 左右花括号，是中文模式写的，改成英文的， 错误还真不少啊

#include <algorithm>
#include <fstream>
#include <iostream>
#include <string>
using namespace std;
// 学生结构体
struct Student {
    string id; // 学号
    string name; // 姓名
    double chinese; // 语文成绩
    double math; // 数学成绩
    double english; // 英语成绩
    double average; // 考试成绩
    int rank; // 考试名次
    double peer_score; // 同学互评分
    double morality_score; // 品德成绩
    double teacher_score; // 任课教师评分
    double total_score; // 综合测评总分
    int total_rank; // 综合测评名次
};
 
const int MAX_STUDENT_NUM = 1000;
Student studentss[MAX_STUDENT_NUM]; // 学生数组
int student_num = 0; // 学生数
 
// 按照从大到小的顺序比较学生成绩，用于排序
bool compare_averages(const Student& s1, const Student& s2)
{
    return s1.average > s2.average;
}
 
// 按照从大到小的顺序比较学生总分，用于排序
bool compare_total_scores(const Student& s1, const Student& s2)
{
    return s1.total_score > s2.total_score;
}
 
// 读入学生信息
void read_studentss()
{
    ifstream fin("students.txt"); // 打开文件
 
    // 从文件中读取每个学生的信息
    while (fin >> studentss[student_num].id >> studentss[student_num].name >> studentss[student_num].chinese >> studentss[student_num].math >> studentss[student_num].english>> studentss[student_num].peer_score>> studentss[student_num].morality_score >> studentss[student_num].teacher_score)
    {
        student_num++;
    }
    fin.close(); // 关闭文件
}
 
 
// 计算学生考试成绩和名次
void calc_exam_score_and_rank()
{
    for (int i = 0; i < student_num; i++)
    {
        studentss[i].average = (studentss[i].chinese + studentss[i].math + studentss[i].english) / 3.0; // 计算考试成绩
    }
 
    sort(studentss, studentss + student_num, compare_averages); // 按照考试成绩排序
 
    // 计算考试名次
    for (int i = 0; i < student_num; i++)
    {
        if (i == 0)
        {
            studentss[i].rank = 1;
        }
        else if (studentss[i].average == studentss[i - 1].average)
        {
            studentss[i].rank = studentss[i - 1].rank;
        }
        else
        {
            studentss[i].rank = i + 1;
        }
    }
}
 
// 计算学生综合测评总分和名次
void calc_total_score_and_rank() {
    for (int i = 0; i < student_num; i++) {
        studentss[i].total_score = studentss[i].average * 0.6 + studentss[i].peer_score * 0.1
            + studentss[i].morality_score * 0.1 + studentss[i].teacher_score * 0.2; // 计算综合测评总分
    }
 
    sort(studentss, studentss + student_num, compare_total_scores); // 按照综合测评总分排序
 
    // 计算综合测评名次
    for (int i = 0; i < student_num; i++) {
        if (i == 0) {
            studentss[i].total_rank = 1;
        }
        else if (studentss[i].total_score == studentss[i - 1].total_score) {
            studentss[i].total_rank = studentss[i - 1].total_rank;
        }
        else {
            studentss[i].total_rank = i + 1;
        }
    }
}
 
// 查询学生信息
void query_student_info(int count)
{   
    string id;
    cout << "请输入学号：";
    cin >> id;
    bool found = false;
    for (int i = 0; i < count; i++)
    {
        if (studentss[i].id == id)
        {
            cout << "学号：" << studentss[i].id << endl;
            cout << "姓名：" << studentss[i].name << endl;
            cout << "语文成绩：" << studentss[i].chinese << endl;
            cout << "数学成绩：" << studentss[i].math << endl;
            cout << "外语成绩：" << studentss[i].english << endl;
            cout << "考试平均成绩：" << studentss[i].average << endl;
            cout << "考试名次：" << studentss[i].rank << endl;
            cout << "同学互评分：" << studentss[i].peer_score << endl;
            cout << "品德成绩：" << studentss[i].morality_score << endl;
            cout << "任课教师评分：" << studentss[i].teacher_score << endl;
            cout << "综合测评总分：" << studentss[i].total_score << endl;
            cout << "综合测评名次：" << studentss[i].total_rank << endl;
 
            found = true;
            break;
        }
    }
 
    if (!found)
    {
        cout << "没有找到对应学生信息！" << endl;
    }
}
//修改学生信息
void modify_student_info(Student studentss[], int count)
{
    string id;
    cout << "请输入学号：";
    cin >> id;
    bool found = false;
    for (int i = 0; i < count; i++)
    {
        if (studentss[i].id == id)
        {
            cout << "请输入新的语文成绩：";
            cin >> studentss[i].chinese;
            cout << "请输入新的数学成绩：";
            cin >> studentss[i].math;
            cout << "请输入新的英语成绩：";
            cin >> studentss[i].english;
            cout << "请输入新的同学互评分：";
            cin >> studentss[i].peer_score;
            cout << "请输入新的品德成绩：";
            cin >> studentss[i].morality_score;
            cout << "请输入新的任课教师评分：";
            cin >> studentss[i].teacher_score;
 
            // 重新计算该学生的信息
            studentss[i].average = (studentss[i].chinese + studentss[i].math + studentss[i].english) / 3.0;
        }
    }
}
void bSystem()
{
    cout << "进入学生数据信息处理系统" << endl;
    int selectA = 0;
    while (selectA != 3)
    {
        cout << endl;
        cout << "1. 查询数据 " << endl;
        cout << "2. 修改数据" << endl;
        cout << "3. 退出子系统" << endl;
        cout << endl << endl;// 输入
        cin >> selectA;
        cout << "您输入的是 " << selectA << endl;
        Student studentss[MAX_STUDENT_NUM]; // 学生数组
        void read_students();
        if (selectA == 1)
        {
            query_student_info(MAX_STUDENT_NUM);
        }
        else if (selectA == 2)
        {
            modify_student_info(studentss, MAX_STUDENT_NUM);
        }
        else if (selectA == 3)
        {
            break;
        }
        else
        {
            cout << "错误的输入，请重新输入！" << endl;
        }
    }
}
int main()
{
    bSystem();
    return 0;
}
 

代码报错出现在第138行，
//修改学生信息
void modify_student_info（Student studentss[], int count）
在这个地方

• 你可以看下这个问题的回答https://ask.csdn.net/questions/7521225
• 我还给你找了一篇非常好的博客，你可以看看是否有帮助，链接：C++ 一元二次方程求根，直输方程可含分数（附源码、注释）
• 除此之外, 这篇博客: C++模板进阶(非类型模板参数，模板特化，模板的分离编译)中的 显示实例化 部分也许能够解决你的问题, 你可以仔细阅读以下内容或跳转源博客中阅读:
  

• 我们只需要在stack.cpp中将T显示实例化即可。

  template
  int Add<int>(const int& left, const int& right);
  

  在stack.cpp中加上这样一段，就是将T实例化成了int类型，可以开辟空间产生地址，使最终链接成功。

• 您还可以看一下 王健伟老师的C++语言基础到进阶课程中的 迭代器精彩演绎，失效分析及弥补、实战小节, 巩固相关知识点
  

在 void bSystem(Student studentss[]) 这一行中没有加分号