Explain the purpose of the pubspec.yaml file in a Dart/Flutter project.

The pubspec.yaml file in a Dart/Flutter project serves as the main configuration file. It specifies:

• The project name and version
• Dependencies (packages) used by the project
• Resource information (e.g., fonts, images)
• Scripts and build settings

This file is necessary for managing packages via the package manager pub or flutter pub. For example, to add a library, you need to specify it in the dependencies section.

Example part of pubspec.yaml:

name: my_app
version: 1.0.0+1
dependencies:
  flutter:
    sdk: flutter
  http: ^0.13.0

Thus, pubspec.yaml manages the dependencies and metadata of the project.