Answer / siggi

class hcl
{
public static void main(String arg[])
{int a=0;
int b=1;
int i=1;
int x,y;

/*System.out.println("enter the no.");*/
x=Integer.parseInt(arg[0]);
if(x==0 || x==1)
{ System.out.println("yes it is");}

else {

do
{
y=a+b;
if(x==y)
{ System.out.println("yes it is");
i=0;}
else if(x>y)
{a=b;
b=y;}
else
{ i=0;
System.out.println("no it is not");}

}while(i!=0);

}
}
}

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