Hello World

Can you complete the following "Hello World"$\text{'}$ program and run with $4,8$ and $16$ CPU processors?

$1**$

"hello world" program

#include $\}$

int nprocs;

int myid;

$I^{**}$ initialize for MPI $(must$ come before any other calls $to$ MPI routines$)$ get number $of$ processes$\frac{*}{?}$

$1^{**}$ get this process's number $(ranges$ from $0to$ nprocs $-1)\frac{*}{?}$

$I^{***}$ please print a greeting with the root processor and all processors, respectively return $EXI{T}_S$UCCESS;

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