The Complete Solidity Course - Zero to Advanced for Blockchain and Smart Contracts - Solution - Strengthen Your Understa

The video tutorial explains how to handle data without altering its original state by creating a new variable for output. It demonstrates the process of adding values to data, returning new data, and addressing state mutability warnings by using 'pure'. The tutorial also highlights the importance of scope, showing that the original data remains unchanged despite multiple function executions.

Why is it important to create a separate output for a function instead of manipulating the original data?

• To ensure the original data can be reused without changes

• To make the code run faster

• To reduce the number of variables in the code

• To make the code more complex

What is one way to achieve a separate output without altering the original data?

• By using the original data directly

• By copying the original data into a new file

• By creating a new variable to store the manipulated data

• By deleting the original data

What does the 'pure' keyword do in the context of state mutability?

• It restricts the function from modifying the state

• It allows the function to access global variables

• It allows the function to modify the original data

• It makes the function run faster

What is the expected output when running the function X?

• 25

• 15

• 10

• 30

How does the concept of scope help in maintaining data integrity?

• By allowing data to be changed globally

• By allowing functions to access all variables

• By ensuring data is only modified within a specific context

• By making all data immutable