1st submission : header file COMM.h

header file with inbuilt function isPrime
header file COMM.h

with isPrime function
Revert "1st submission : header file COMM.h"

This reverts commit 9f626109ee25100fdb41a0a128d0733a67af4907.
garbage
Revert "garbage"

This reverts commit b424c617d95d679da16a1d0ef891151526450be7.