1.) About program arguments, parameters, variables!
In the case of programs, arguments, parameters and variables are almost identical, but the term argument usually means the transfer of data to a program and under the parameter usually hides the processing within a program.
But these are quite variable terms, you can summarize them as command line arguments.
The command-line arguments!
The number of command-line arguments is checked by the program. Because each program works differently and expects different startup parameters. The value returned by the program is 0 (NULL) if the program can not interpret it, so the program terminates with an error or an error message.
The console applications are very well suited to understand this mode of operation:
2.) Example 1: Simple argument for the MS File explore to open the C:\Windows
explorer.exe C:\Windows
in this case is "C:\Windows" the program argument(commando line / parameter, variable, .... :-)
The file extension, or file suffix are terms that stand for the end of the file, but this is not the content of the file meant. It refers to the file name,
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The PS2 printer port is an almost extinct connection that lacks many computers and notebooks for cost reasons With desktop computers and without PS2 you
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