Advanced Smart Contract Writing

This simulation introduces advanced smart contract writing by demonstrating the implementation of structs, arrays, and mappings to organize and manage on-chain data. Learners will define structured data, store multiple records, and interact with deployed smart contracts.

Step 1: Select a Tutorial (Struct.sol)

  • Click the Files button in the left sidebar.
  • Under the Contracts section, select Struct.sol.
  • The Advanced Smart Contract Development welcome screen is displayed, confirming the tutorial is loaded.

Step 2: Review Logic and Flowchart

  • After selecting Struct.sol, the Struct – Logic page opens.
  • Observe the interactive flowchart that visually represents the conditional execution flow:
    • You can drag the canvas to move the flowchart.
    • Scroll to zoom in or out for better visibility.
  • Click Proceed to Exercise after understanding the execution flow.

Step 3: Define the Student Struct (Exercise – Question 1)

  • The Struct – Exercise panel appears on the right side of the screen.
  • Question 1 asks you to define a struct named Student.
  • Enter the required struct keyword to complete the struct definition as shown.
  • Click the Next button to proceed to the next exercise.
Define Student Struct Exercise

Step 4: Declare the Student Array (Exercise – Question 2)

  • Question 2 asks you to declare an array of type Student.

  • Add the following declaration to store multiple student records:

    Student[] public students;
              
  • Click Next to proceed.

Step 5: Implement the addStudent Function (Exercise – Question 3)

  • Question 3 requires implementing the addStudent function.
  • Click Run & Compile.
  • If the code is correct, the compilation will succeed.

Step 6: Deploy the Smart Contract

  • After successful compilation, the Smart Contract Deployment panel becomes active.
  • Select Struct.sol from the contract dropdown.
  • Click Deploy Contract.
  • A Deployed Contract section appears, confirming successful deployment.

Step 7: Interact with the Deployed Contract

  • In the Student Struct Interface:
    • Enter a Name.
    • Enter an Age.
    • Click Add Student to store the data on-chain.
  • Use Get Student to retrieve stored student details.
  • Observe the returned values and event logs.

Continuing with the Remaining Smart Contract

After successfully completing the Struct tutorial, repeat the same procedure for the remaining tutorials:

  • Select Array.sol to practice working with dynamic and fixed-size arrays, including looping constructs such as for and while loops.
  • Select Mapping.sol to explore key-value storage, advanced mapping patterns, and their use in creating efficient data retrieval structures.