R basic, 'for loop' Calculating Leap Year

• Logical meaning 

1. & - > and
2. | - > OR
3. ! - > Not

> for(year in 2000:2018){

+   if (year%%4==0 & year%%100!=0 | year%%400==0){

+     result <- paste(year, "is a leap year.")

+     print(result)

+   }

+   else{

+     result <- paste(year, "is not a leap year.")

+     print(result)

+   }

+ }

[1] "2000 is a leap year."

[1] "2001 is not a leap year."

[1] "2002 is not a leap year."

[1] "2003 is not a leap year."

[1] "2004 is a leap year."

[1] "2005 is not a leap year."

[1] "2006 is not a leap year."

[1] "2007 is not a leap year."

[1] "2008 is a leap year."

[1] "2009 is not a leap year."

[1] "2010 is not a leap year."

[1] "2011 is not a leap year."

[1] "2012 is a leap year."

[1] "2013 is not a leap year."

[1] "2014 is not a leap year."

[1] "2015 is not a leap year."

[1] "2016 is a leap year."

[1] "2017 is not a leap year."

[1] "2018 is not a leap year."