datbaw

#include <iostream.h>
#include <conio.h>

void main ()
{
double a;

clrscr ();
a= 1.1;
// cout <<" Input a : ";
// cin >> a;

a=(a-(int)a)*10;
cout <<" Result a : " << a-(int)a;

getch();
}


==> a = 8.881784E-16 (????)

If you can, please mail for me . Thanks

Resolution

First off, you didn't even provide a valid question to your problem. You merely tossed up some code and expected us to figure out what it is that you want done. You then want someone to email you the answer when that is clearly not what the forums are meant for.

In other words, show some common courtesy if you expect people to help you.

datbaw

My english isn’t well so I wrote it too short … I’m very sorry.
So I present it by ….
{
.......
Double a = 1.1 ; // This’s an example.
a=(a-(int)a)*10; // The result’s 1 . It’s right
cout <<" Result a : " << a-(int)a; // But this’s a = 8.881784E-16 instead of a=0
……
}

Thank you very much.