dev C++ 调试卡住/遇到endl函数卡住

今天调试一个程序，发现编译运行的时候可以正常运行，但是调试的时候总是在endl那里卡住

分享一个链接杀千刀的dev c++的不能单步调试的问题_老宁宁的博客-CSDN博客

#include<iostream>
using namespace std;

class DivideByZeroException{
    const char* message; //异常信息
    
    public:
        DivideByZeroException():message("divided by zero"){
            
        } 
        const char* what(){
            return message;
        }
};

//除法函数
double testdiv(int num1,int num2){
    if(num2==0){
        throw DivideByZeroException();
    }
    return (double)num1/num2;
} 
int main(){
    int num1,num2;
    double res;
    cout<<"please input two integers:"<<endl;
    while(cin>>num1>>num2){
        try{
            res=testdiv(num1,num2);
            cout<<"the res is :"<<res<<endl;
        }
        catch(DivideByZeroException ex){
            cout<<"error"<<ex.what()<<endl;
            break;
        }
        cout<<"\n please input two integers:";
    }
    return 0;
}