# Introduction

**fi** is a statically typed high-level programming language designed to be similar, syntactically, to ECMAScript/Javascript and Solidity. fi compiles directly to valid and well-typed Michelson code, the native smart contract language for the Tezos block chain.

fi allows developers to work in a more familiar coding environment, providing a close experience to object-oriented programming. Here's a really short demonstration of the potential of developing smart contracts with fi:

```javascript
# King of Tez Contract

# Define a constant for ONEWEEK in seconds
const int ONEWEEK 604800;

# Define an object King
struct King(
    timestamp end, 
    mutez bounty, 
    address owner); 

# Declare a storage variable king of type King (the object we created)
storage King king; 

# Entry point for this script
entry contend(){
    assert(storage.king.end < NOW || AMOUNT > storage.king.bounty);
    let address oldKing = storage.king.owner;
    storage.king = new King(add(NOW, ONEWEEK), AMOUNT, SENDER);
    transfer(oldKing, AMOUNT);
}
```

This smart contract reads extremely easy within fi, but accomplishes an extremely advanced set of functions.

## Compiling to Michelson

You can install our compiler by following instructions from our [Github repo](https://github.com/TezTech/fi-compiler) - this will allow you to install and use our compiler. You can also use our [online compiler tool](https://fi-code.com) as well.

The web-based browser/editor will compile your fi to Michelson and typecheck the compiled source code. Furthermore, you can run tests against your Smart Contract to simulate live operations and calls.