谁能帮我把这个程序加段循环上去，能让我一直循环这个程序

#include "touwenjian.h"
int main()
{
    while (true){
        int score=0;
        cout<<"请输入您的分数"<<endl;
        cin>>score;
        if (score>750||score<0)
        {
            cout<<"成绩输入不正确"<<endl;
        }
        else
        {
            cout<<"您的分数为"<<score<<endl;
            if (score>600&&score<=750)
            {
                cout<<"您考上了一本"<<endl;
                if (score>700)
                {
                    cout<<"您考上了北大"<<endl;
                }
                else if (score>650)
                {
                    cout<<"您考上了清华"<<endl;
                }
                else
                {
                    cout<<"您考上了人大"<<endl;
                }}
                else if (score>500&&score<=600)
                {
                    cout<<"您考上了二本"<<endl;
                }
                else if(score>400&&score<=500)
                {
                    cout<<"您考上了三本"<<endl;
                }
                else
                {
                    cout<<"未考上本科"<<endl;
                }}
        system("pause");
        system("cls");
                }
                system("pause");
                return 0;
            
        }