Dolphins have excellent eyesight and hearing. Underwater they use echolocation. Echolocation is kind of like sonar where dolphins make a sound and then listen to the echo. Their hearing is so sensitive to these echoes that they can almost see objects in the water by hearing. This allows dolphins to locate food in cloudy or dark water.
Hello World - Writing, Compiling and Running a C++ Program. When you write a program, you use a development environment. Your development environment can be a basic text editor or a feature rich C++ integrated development environment (IDE).
Expression Blend produces Windows Presentation Foundation (WPF) applications, Silverlight 1.0 websites, and Silverlight 2 user controls (.xap and supporting files). Your visual design is represented by XAML. Just as HTML is the markup language for web applications, XAML is the markup language for WPF.