The Complete Solidity Course - Zero to Advanced for Blockchain and Smart Contracts - Scope and State in Solidity

The video tutorial explains the concept of public functions in smart contracts, focusing on how they provide access both internally and externally. It discusses modifying data within functions, the implications of such changes, and the need to adjust function properties like 'view'. The tutorial also covers the process of compiling and deploying contracts, observing state changes, and understanding how these changes affect outputs. Through practical examples, it demonstrates redeploying contracts and the resulting state updates.

What does the 'public' keyword in a smart contract function allow?

• It makes the function private.

• It allows access to the function from outside the contract only.

• It allows access to the function from both inside and outside the contract.

• It restricts access to the function.

How can you change the data output within a function to a specific value?

• By using a different data type.

• By creating a new function.

• By declaring the function as private.

• By accessing the variable and setting it to the desired value.

What must be removed from a function if it modifies the state?

• The 'view' keyword.

• The 'public' keyword.

• The 'private' keyword.

• The 'constant' keyword.

What happens to the state variable when function X is executed?

• It is set to 10.

• It is set to 17.

• It remains unchanged.

• It is reset to its default value.

What is the initial value of the state variable before any function is executed?

• 15

• 5

• 20

• 10