问当我运行showLocation函数5次时，没有任何响应

EN

#include<iostream>
#include<ctime>

float ex, ey;

class Enemy
{
    public:
        float x, y;
    
        Enemy()
        {
            x = ex;
            y = ey;
        }
    
        void showLocation()
        {
            std::cout<<x<<" , "<<y<<std::endl;
        }
};
int main()
{
    Enemy e;
    for(int i = 0;i<5,i++;)
    {
        ex = rand() % 5 + 1;
        ey = rand() % 5 + 1;
        e.showLocation();
    }
}