The Complete Solidity Course - Zero to Advanced for Blockchain and Smart Contracts - Review - Public Private External an

The video tutorial explains the structure and functionality of two smart contracts, A and B. Contract A includes state variables and functions with different visibility levels, such as public, external, and internal. Contract B inherits from Contract A and demonstrates how function visibility affects data accessibility. The tutorial covers compiling, deploying, and testing the contracts, emphasizing the importance of understanding function visibility for effective smart contract development.

Describe the difference between external and internal visibility in smart contracts.

How does the accessibility of data and functions in smart contracts affect their functionality?