Question: Develop a program in c that accepts one command line argument, permissions in octal numbers such as 764, and outputs the permissions in letter format,

Develop a program in c that accepts one command line argument, permissions in octal numbers such as 764, and outputs the permissions in letter format, for example, rwxrw-r-- of 764. Assume the executable file is a.out. Your running demo is as below.

:~ $ ./a.out 764

rwxrw-r--

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