We first define the function as a variable, myFirstFun, using the keyword function, which also receives n as argument (no type specification). The latter will exist within the function. We used an integer, but 'n' could also be a vector or a matrix or a string: R handles all this nicely for us.
America in the 20th Century. The 20th century heralded the beginning of a new era in fitness. President Theodore Roosevelt, perhaps the most physically fit president ever to occupy the Oval Office, used his power and own example to encourage U.S. citizens to be physically active.
Then-presidential candidate Ronald Reagan carries bowl of jelly beans around to passengers aboard a jet flying Reagan and his entourage back to Los Angeles in 1980. When I was a child, President Ronald Reagan was the nice man who gave us jelly beans when we visited the White House.