Shows how to use alert box with fl_alert method.
To build this project, open "Terminal" and type following lines:
mkdir build && cd build
cmake ..
start Alert.sln
Select Alert project and type Ctrl+F5 to build and run it.
mkdir build && cd build
cmake .. -G "Xcode"
open ./Alert.xcodeproj
Select Alert project and type Cmd+R to build and run it.
mkdir build && cd build
cmake ..
cmake --build . --config Debug
./Alert