uva problem 11461 Square Numbers solution

#include<bits/stdc++.h>
#include<cmath>
using namespace std;
int main()
{
    double d;
    int a, b;
    while(scanf("%d%d", &a, &b) && ( a>0 && b>0)){

    int c=0;
    if( a>b){ int temp;
    temp=a;
    a=b;
    b=temp;
    }
    for(int i=a;i<=b;i++){
        d=sqrt(i);
        if(d==int(d)){
            c++;
        }

    }
    printf("%d\n",c);

    }
    return 0;
}