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.
Accomplishments in Office. Theodore Roosevelt was one of the most vigorous men to enter the White House. Not only was he young in years, he was clearly a man of action, and this set the tone for his Presidency. Roosevelt carried out a vigorous foreign policy.