Gain insights into Dart, an object-oriented language crucial for Flutter development. Delve into its fundamentals and prepare to craft high-quality native interfaces on iOS and Android.

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Learn Dart for free with this interactive course. Dart is a clean, simple, class-based, object-oriented language with more structure than JavaScript, the programming language it's heavily based on. However, you can't have a conversation about Dart without mentioning Flutter. 

Flutter is Google's mobile UI framework for crafting high-quality native interfaces on iOS and Android. Flutter applications are written using the Dart programming language, which has helped make Dart a beloved language by the developer community. Before you can start fluttering out Flutter applications, you must learn Dart. This course will help you learn the fundamentals of Dart and start your journey to learning Flutter. Start learning today.

Learn Dart: First Step to Flutter

# Problem statement

In this challenge, you need to create a nested function, `max`, which will be defined in the body of the function `mainMax`. `mainMax` returns the maximum of three numbers using the `max` function.

You will need to write the `max` function from scratch. Take some time and try to figure out how many parameters it should have and what the return value will be. You will also need to figure out what `mainMax` will return.

## Input

The inputs of the `mainMax` function are three numbers `a`, `b`, and `c` of type `int`.


## Output
The output will be the maximum of `a`, `b`, and `c`.

## Sample input
```dart
mainMax(1,9,5)
```

## Sample output
```dart
9
```
## Test yourself

Write your code in the given area. Try the exercise by yourself first, but if you get stuck, the solution has been provided. Good luck!

Test yourself and implement what you have learned so far in this chapter.

Introduction

Getting Started with Dart

Data Types and Variables

Operators

Dart's Collection

Control Flow Statements

Exploring Functions

Classes

Where to Go From Here

Challenge: Max with Nested Functions

Problem statement