Problem 1: Write a program to input number of days from user and convert it to years, weeks and days. Ignore leap years.

Problem 2: Write a program that takes a floating point number and outputs the minimum amount of currency denominations needed to make up that number. Eg. If the user input 45.78 then the output would be:

4 ten dollar bills
1 five dollar bills
0 two dollar bills
0 one dollar bills
3 twenty five cent pieces
0 ten cent pieces
0 five cent pieces
3 one cent pieces

Problem 3: Write a program that takes in a number of seconds and outputs the time in this format: hh::mm::ss where hh is the hours, mm is the minutes, and ss is the seconds.