multimap插入自定义类时遇到的问题

Question

#include <iostream>
#include <vector>
#include <string>
#include <map>
#include <ctime>
using namespace std;

class Staff
{
public:
    Staff(char name, int wages, string department)
    {
        this->name = name;
        this->wages = wages;
        this->department = department;
    }
    char name;
    int wages;
    string department;
};

void insertStaff(vector<Staff> &staffs)
{
    char ch = 'A';
    srand((unsigned int)time(NULL));
    for (int i = 1; i <= 10; i++, ch++)
    {
        int random = rand() ;
        int random2 = rand() % 3;
        string department;
        switch (random2)
        {
        case 0:department = "策划"; break;
        case 1:department = "美术"; break;
        case 2:department = "研发"; break;
        }
        staffs.push_back(Staff(ch, random, department));
    }
}

void printStaff(const vector<Staff> &staffs)
{
    for (vector<Staff>::const_iterator it = staffs.begin(); it != staffs.end(); it++)
    {
        cout << (*it).name << " " << (*it).wages << " " << (*it).department <<endl;
    }
}

void insertmultimap(multimap<int, Staff> &staffmap,  vector<Staff> &staffs)
{
    int department;
    
    for (vector<Staff>::iterator it = staffs.begin(); it != staffs.end(); it++)
    {
        if ((*it).department == "策划") department = 0;
        if ((*it).department == "美术") department = 1;
        if ((*it).department == "研发") department = 2;
        char name = (*it).name;
        string department1 = (*it).department;
        int wages = (*it).wages;
        staffmap.insert(pair<int, Staff>(department, Staff( (name, wages, department1) ) ) );
    }
}

int main(void)
{
    vector<Staff> staffs;
    insertStaff(staffs);
    printStaff(staffs);

    multimap<int, Staff> staffmap;
    insertmultimap(staffmap, staffs);

    system("pause");
    return 0;
}

Answer 1

62行多写了一层括号
staffmap.insert(pair<int, Staff>(department, Staff( (name, wages, department1) ) ) )这里
改成staffmap.insert(pair<int, Staff>(department, Staff( name, wages, department1) ) )