MAC电脑在写C++出现sh: pause: command not found

我用Xcode和vscode 都有这个问题，百度了没有找到解决的方法。

#include <iostream>
using namespace std;
int main(){
    int select;
    while (true)
    {
           cout << "======================  欢迎来到机房系统  =====================" << endl;
        cout << endl << "请输入您的身份" << endl;
        cout << "\t\t -------------------------------\n";
        cout << "\t\t|                               |\n";
        cout << "\t\t|          1.学生代表           |\n";
        cout << "\t\t|                               |\n";
        cout << "\t\t|          2.老    师           |\n";
        cout << "\t\t|                               |\n";
        cout << "\t\t|          3.管 理 员           |\n";
        cout << "\t\t|                               |\n";
        cout << "\t\t|          0.退    出           |\n";
        cout << "\t\t|                               |\n";
        cout << "\t\t -------------------------------\n";
        cout << "输入您的选择: ";
        cin>>select;
    switch (select)
    {
    case 1:
        break;
    case 2:
        break;
    case 3:
         break;
    case 0:
    cout<<"欢迎下次使用"<<endl;
    return 0;
         break;
    default:
      cout << "输入有误，请重新选择！" << endl;
            system("pause");
        break;
    }
    }
    system("pause");
    system("cls");
    return 0;
}

system("pause")只有windows上能用