Modify the program that just prints a line of output from each process $($mpi

output.c$)$ so that the output is printed in process rank order: process $0$s

output first, then process $1$s$,$ and so on$.$

a$.$ Use point$-$to$-$point communication.

b$.$ Use collective communication such as gather.

Copy the source code in your answers file. Launch the Command line and

take a Screenshot of the window with the result of the program

execution including your name. $($copy the Screenshot in your answers

f

ile$).$ Also, provide an explanation showing how the code works.