Basic Installation==================Unix/X11:The simplest way to compile this package is:  1. 'cd' to the directory containing the package's source code and type     'qmake lesson05.pro' to generate the makefile for your system.  2. Type 'make' to compile the package.  3. Type './lesson05' to run the application.MS/Windows:The simplest way to compile this package is:  1. 'cd' to the directory containing the package's source code and type     `qmake lesson05.pro' to generate the makefile for your system.  2. Type 'nmake' to compile the package.  3. Type 'lesson05.exe' to run the application.Aother way to compile this package is:  1. 'cd' to the directory containing the package's source code and type     `qmake -t vcapp -o lesson05.dsp lesson05.pro' to generate the .dsp file for your system.  2. Use Microsoft Visual Studio 6.0 to open the project with lesson05.dsp and compile, run, debug the application in it.