The Complete Solidity Course - Zero to Advanced for Blockchain and Smart Contracts - Exercise - Modifier Function

The video tutorial guides viewers through writing a code modifier that checks if the current caller matches a specified account address. If the condition fails, a 'sender not authorized' message is sent. The tutorial emphasizes practicing modifiers and provides a step-by-step approach to implementing and testing the modifier. It concludes with final instructions and encouragement to apply the learned concepts.

What is the purpose of the modifier mentioned in the text?

What message is sent if the requirement fails?

What should the current caller be equal to according to the modifier?

What is the significance of the exclamation mark in the message?

What is the name of the modifier that is mentioned?