[Code Hoof Set Novice Village 600 Questions] Find the square root of the given data

Title link:

Code Foot Collection (matiji.net)

Things to solve the problem:

• The floor(x) function in the title refers to rounding down,

  is the largest integer not greater than x

So there is no need to judge whether the input data is a perfect square number,

Because even if it's not a perfect square,

The result of the final floor (x) rounded down is the same

Note:

The return type of floor(x) is double

• sqrt() function is C, C++ specially used to find the square root of a number

Reference code:

#includeusing namespace std;int main( ){int data = 0;cin >> data;printf("%d",(int)floor(sqrt(data)));return 0;}