Our logic to calculate the square root of a given number

• Our program will take an integer as input from the user.
• It then checks if the number is negative or not.
• Then using the ‘sqrt()’ function it will calculate the square root of the given number. And returns it as the output of our program.

Algorithm to calculate the square root of a given number

Step 1: Start

Step 2: import math library

Step 3: take an integer input from the user and store it in num variable.

Step 4: if num<0:

print(“Negative numbers can’t have square roots”)

else:

print(“square roots = “,math.sqrt(num))

Step 5: Stop

Following is sample python code.

import math
#take input from the user
num = int(input("Enter a number to find square root : "))
#check if the input number is negative
if num<0:
    print("Negative numbers can't have square roots")
else:
    print("square roots = ",math.sqrt(num))