Question: Write parallel MPI code for estimating pi using the trapezoidal method. The number of intervals should be read from a file named input.txt by process

Write parallel MPI code for estimating pi using the trapezoidal method. The number of intervals should be read from a file named input.txt by process 0 and broadcast to other processes. You should use a user-defined datatype to send this message. (Given that there is only one data item, use of a user-defined data type is not useful. But I want you to get some practice on this.) Each process should output its local sum, along with its rank. This output should be printed in ascending order of process rank. The processes should also perform a reduction and process 0 should print the estimate of pi, along with the time taken for the computation, excluding the initial file read and broadcast.

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