How to Calculates Square Roots in C++ | Built-In vs Custom Function
In this lesson, we write a C++ program that asks the user to enter a number and then prints its square root by using both the built-in sqrt function and our own custom square root function.
This lesson shows how square root logic works in programming and how we can build the same behavior ourselves.
For example, if the user inserts: 25
The output can be:
My Square root Function Result is: 5
C++ Square root built-in function Result is: 5
In this video, you will learn:
• How to read a number from the user in C++
• How to calculate the square root of a number
• How the built-in sqrt function works
• How to build your own square root function
• How to compare custom logic with built-in logic
• How this idea is used in apps, websites, games, and data processing
• How to think like a programmer when handling math values
This lesson is a very important beginner-friendly introduction to functions, math, and square root logic in C++.
It also shows how re-usability and extendability work in programming, because we create our own function that does the same job as the built-in function.
If you are learning C++ problem solving step by step, this lesson will help you understand numbers, square roots, and function building.
This lesson 42 of Course 4: Problem Solving for Programmers Using C++ (Part 2) – Beginner Track.
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