UnidentifiedDefine a method ramed isLeapYearO that accepts a year as a parameter, and retums tue ifthe year is a leap yea, otherwise, retuns false. Write a main$0$ method testing the functiondefined Define isLeapY ea$0$ on a file named leap$$ear$2$ and the main$0$ on a file namedmain.cpp$,$ assue both files are always on the same file path