The Complete Solidity Course - Zero to Advanced for Blockchain and Smart Contracts - Solution - Inheritance with Smart C

The video tutorial covers an inheritance exercise in Solidity, focusing on creating two contracts, A and B. Contract A includes a state variable and a function, while contract B inherits from A and adds its own function. The tutorial explains how to implement inheritance, deploy the contracts, and test their functions. It concludes with a summary and encouragement for further learning challenges.

Why is understanding inheritance in Solidity particularly important for beginners?

• It is a fundamental concept that is widely used.

• It is the only concept in Solidity.

• It is the easiest concept to learn.

• It is not used in other programming languages.

What is the initial value of the state variable 'interval' in Contract A?

• 200

• 150

• 100

• 50

What is the purpose of the 'inneradd 10' function in Contract A?

• To divide a given input by 10.

• To add 10 to a given input.

• To multiply a given input by 10.

• To subtract 10 from a given input.

How does Contract B inherit from Contract A?

• By using the keyword 'extends'.

• By using the keyword 'inherits'.

• By using the keyword 'implements'.

• By using the keyword 'is'.

What does the 'outer add 10' function in Contract B do?

• It uses the 'inner add 10' function from Contract A to add 10 to the input.

• It adds 10 to the input using a new calculation.

• It subtracts 10 from the input using a new calculation.

• It multiplies the input by 10 using a new calculation.

What is the expected output of 'get inner value' function in Contract B?

• 50

• 200

• 150

• 100

What is demonstrated by deploying and testing the contracts?

• Inheritance is not useful in Solidity.

• Inheritance allows access to functions from the parent contract.

• The contracts are too complex to understand.

• The contracts do not work as expected.