Write a C program using the fork$()$ system call that generates this

sequence in the child process. The starting number will be provided

from the command line. For example, if $8$ is passed as a parameter on

the command line, the child process will output $8,4,2,1.$ Because the

parent and child processes have their own copies of the data, it will be

necessary for the child to output the sequence. Have the parent invoke

the wait$()$ call to wait for the child process to complete before exiting

the program. Perform necessary error checking to ensure that a positive

integer is passed on the command line.