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Details

Please consider the question: $$including the initial parent process, how many processes

are created by the program shown below?$$

int main $()$

$\{$

fork$()$; $//$fork a child process

fork$()$; $//$fork another child process

fork$()$; $//$and fork an additional one

fork$()$; $//$This is the last fork

return $0$;

$\}$

More concretely, it has the following steps:

$1\mathrm{.}1)$ You need to verify your assumption via a C$++$ program. This step is pretty

straightforward, you only need to use the aforementioned program as the starting

point. Then, you need to further modify it$,$ e$.$g$.$ to insert some code for verifying your

assumption and ensure your program can be finally executed.

$1\mathrm{.}2)$ Please describe $($in detail$)$ your assumption and how do you verify your

assumption. You need to include necessary screenshots to support your inference.