The Complete Solidity Course - Zero to Advanced for Blockchain and Smart Contracts - How to Understand Pragma Solidity

This lesson covers the basics of setting up a Solidity file, focusing on the use of 'pragma solidity' to specify compiler versions. It explains how to use comparison operators to define a range of versions, ensuring compatibility with different versions of Solidity. The lesson emphasizes the importance of specifying the compiler version before writing smart contracts and provides practical steps for creating and setting up a Solidity file.

What is the first step you should take when starting a new Solidity project?

• Specify the compiler version

• Create a new file with a .sol extension

• Add comments to the code

• Write the smart contract code

Which operator combination is used to indicate 'greater than or equal to'?

• ==

• >=

• !=

• <=

What does the range '0.70 to 0.9.0' signify in the context of Solidity compiler versions?

• Versions only above 0.9.0

• Versions between 0.70 and 0.9.0, including 0.70 but not 0.9.0

• Versions excluding 0.70

• Versions including 0.9.0

Why is it important to specify the compiler version in Solidity?

• To avoid syntax errors

• To ensure compatibility with the Solidity language

• To enable debugging features

• To improve code readability

What should you always include before writing smart contracts in Solidity?

• The contract name

• A list of variables

• The main function

• Pragma solidity with the specified version