Update exercise for students

exercise-3/exercise.R

@@ -1,44 +1,40 @@
 # Exercise-3: Calling built-in functions
 
 # Create a variable `my.name` that contains your name
-my.name <- "Joel Ross"
+
 
 # Create a variable `name.length` that holds how many letters are in your name (use the `nchar()` function)
-name.length <- nchar(my.name)
+
 
 # Print the number of letters in your name
-print(name.length)
+
 
 # Create a variable `now.doing` that is your named followed by "is programming!" to the end of your name
 # (use the `paste()` function)
-now.doing <- paste(my.name, "is programming!")
+
 
 # Make the `now.doing` variable upper case
-toupper(now.doing)
+
 
 ### Bonus
 
 # Pick two of your favorite numbers (between 1 and 100) and assign them to `fav.1` and `fav.2`
-fav.1 <- 12
-fav.2 <- 87
+
 
 # Divide each number by the square root of 201 and save it as the same variable
-fav.1 <- fav.1/sqrt(201)
-fav.2 <- fav.2/sqrt(201)
+
 
 # Create a variable `raw.sum` that is the sum of those two variables. Use the `sum()` function for practice
-raw.sum <-sum(fav.1, fav.2)
+
 
 # Create a variable `round.sum` that is the `raw.sum` rounded to 1 decimal place. Use the `round()` function
-round.sum <- round(raw.sum, 1)
+
 
 # Create two new variables `round.1` and `round.2` that are your `fav.1` and `fav.2` variables rounded
 # to 1 decimal place
-round.1 <- round(fav.1, 2)
-round.2 <- round(fav.2, 2)
+
 
 # Create a variable `sum.round` that is the sum of the rounded values
-sum.round <- sum(round.1, round.2)
+
 
 # Which is bigger, `round.sum` or `sum.round`? (You can use the `max()` function!)
-max(sum.round, round.sum)