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Difference between CLI program and GUI program?

Difference between CLI program and GUI program?

Key differences and features of CLI and GUI programs are listed below.

CLI Program

Command line program or classic CLI program ( Command line interface ) works in simple fashion. It prompts and accepts data from the command line and processes the input data. Optionally, the CLI program accepts command line parameters to the program. The output is displayed to standard output devices or written to a file. The CLI program exits once the output is displayed. CLI programs have minimal interaction from the user.

Sample CLI Program flow chart below:

 

CLI Program

GUI Program

GUI ( Graphical User Interfaces ) programs have user interfaces. The user interface contains controls, buttons, windows, etc. These controls help the end user to use the application with ease. GUI programs are interactive. GUI program waits for events. Most programming languages support the development of GUI programs using native GUI Toolkit.

Sample GUI Program flow chart below:

 

GUI Program

 

 

Graphical programs wait until the user performs some action. Once the user performs some action, a callback or an event handler is invoked to perform some intended functionality. GUI programs normally allow the user to gracefully stop the program by clicking on the x button on the window.

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