phoon

Write a program, phoon.c, that reports the age or phase of the moon based on an argument-based date. Assume that the day range is 1-31, month range is 1-12, and year is 1900-2099. If the -a switch is thrown, the moon’s age is printed as an integer. Otherwise is prints the common western description of the moon’s phase: age name 0,1,29 new 2,3,4,5,6 waxing crescent 7,8 first quarter 9,10,11,12,13 waxing gibbous 14,15,16 full 17,18,19,20,21 waning gibbous 22,23, third quarter 24,25,26,27,28 waning crescent