Thread: A beginner's problem !

Code:

Hi everyone. Well, I have  just started C++ programming and I solved one problem partly, actually the user enters three numbers and I must check if there is a right triangle with sides whose lengths are those three numbers. The program works for integer .For example, if I enter :3,4,5 it works but when I enter 0.3 , 0.4 , 0.5 it says there there us no right traingle with these lenghts but it should be ! Here is the program :

#include<iostream>
using namespace std;
int main(){
    double a,b,c;
    cout<<"Please enter three numbers";
    cin>>a>>b>>c;
    if(a*a+b*b==c*c || a*a+c*c==b*b || c*c+b*b==a*a)
    cout<<"There is a right triangle with these lenghts";
    else
    cout<<"There is not ... ";
return 0;
}

Thank you very much ! I will ...