11461 - Square Numbers

[lighted]

Third way is close to correct answer.
The problem description:

Given two numbers a and b you will have to find out how many square numbers are there between a and b (inclusive).

Change line

Code: Select all

 if(i==sqrt(i)*sqrt(i))
                coun++;

It is better to work only with integers. sqrt returns double value.

Code: Select all

int j = sqrt(i);
if(i==j*j)
      coun++;