要求三个数（取小数点后两位）三数相加相乘 都等于711

#include <iostream.h>
int main()
{
    int a,b,c,d,f;
    for(a=71100;a>=0;a--)
    {
       for(b=71100;b>=0;b--)
     {
           for(c=71100;c>=0;c--)
           {
             d=a+b+c;
             f=a*b*c;
             {if (d==711&&f==711)
             { cout<<"恭喜!!找到了!!"<<endl;
             cout<<"第一个数等于"<<a<<"第二个数等于"<<b<<"第三个数等于"<<c<<endl;}
            else
                cout<<a<<" + "<<b<<" + "<<c<<"相加等于"<<d<<endl;  
            cout<<a<<" * "<<b<<" * "<<c<<"相乘等于"<<f<<endl<<endl;}
        
           }
       }
    }

return 0;
}