#include <iostream>
int mian()
{
        std::cout<<"一:\t"<<100;
        std::cout<<std::endl;
        std::cout<<"二:\t"<<5;
        std::cout<<std::endl;
        std::cout<<"三:\t"<<(float)8/5;
        std::cout<<std::endl;
        return 0;
}


大虾们帮忙看看 哪里错了

谢谢各位   细节我以后会注意的