Sherlock and Squares Hacker Rank Solution in C

https://www.hackerrank.com/challenges/sherlock-and-squares/problem

#include <stdio.h>

#include <math.h>

int main() 

{

    int q; 

    scanf("%d", &q);

    while(q--)

    {

        int a,b,c=0; 

        scanf("%d%d", &a, &b);

        for(int i=sqrt(a);i<=sqrt(b);i++)

        {

            int k=i*i;

            if(k>=a && k<=b)

                c++;

        }

        printf("%d\n", c);

    }

    return 0;

}