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.
William McKinley served in the U.S. Congress and as governor of Ohio before running for the presidency in 1896. As a longtime champion of protective tariffs, the Republican McKinley ran on a platform of promoting American prosperity and won a landslide victory over Democrat William Jennings Bryan to become the 25th president of the United States.