What are interfaces in Solidity?

What are interfaces in Solidity?

Interfaces in Solidity are similar to contracts but only declare functions without implementing them. They define a contract's structure.

Can you give me an example of a Solidity interface?

Sure! Here's a simple example:

interface IMyInterface {
    function myFunction(uint256 value) external;
}

How do I implement an interface in a contract?

To implement an interface, your contract must define all the functions declared in the interface. For example:

contract MyContract is IMyInterface {
    function myFunction(uint256 value) external override {
        // implementation here
    }
}

What happens if I don't implement all functions of an interface?

If you don't implement all functions, your contract will not compile, and you'll get an error indicating that the contract is missing the required functions.