C++ Program to find the square root of a number

In this example, You will learn How to Find Square Root of a Number in C++ by using a predefined library Function ( Math.h).

ans = sqrt(num);

4 = sqrt(16);

Example: Find square Root of a Number in C++.

using namespace std;

int main() {

    float num, ans;
    cout << "Enter a number:";
    cin >> num;

    ans = sqrt(num);
    cout << "Square root of " << num << " is :" << ans;

    return 0;


Enter a number:16
Square root of 16 is :4

Xiith is created for educational, experimental, and schooling purpose. Examples on Xiith are made easier to make a better or basic understanding. Tutorials, testimonials, and examples are continuously checked to avoid delusion, but we cannot take complete responsibility of all programs on Xiith. When you are operating this site, you have to agree to read and accept our terms of use, cookie and privacy policy.Copyright © 2020 by Xiith. All Rights Reserved. About us.