Run your Ruby file by typing ruby and then the name of the file you want to run in the Terminal.

If we want to run hash_person.rb, we can write the command:

ruby hash_person.rb

To re-run this command, you can use the UP and DOWN arrow keys to look at the history of commands you've run in a Terminal.

Input:

Maude 24 Artist

Key output: { :name => "Maude", :age => 24, :occupation => "Artist" }

Complete input and output example:

"Enter a name, age, and occupation separated by spaces:"
Maude 24 Artist
{ :name => "Maude", :age => 24, :occupation => "Artist" }

Write a program that uses the sample_hash variable and prints the value of key "history"

sample_hash = {
   :class => { 
      :student => { 
         :name => "Mike",
         "marks" => { 
            "physics" => 70,
            "history" => 80
         }
      }
   }
}

Write a program that: Asks the user for an Integer, then checks to see if that integer is a value of any of the keys in sample_hash. If you find the number, print out "100 is under the key: a." If you don't find the number print out "Could not find the integer 100"

Example:

"Enter an integer:"
4
"Could not find the integer 4"

Given this list of people, print only names of people who are at least 16.

Yes, you could just look at it with your eyes and print their names, but imagine that you couldn't because there are a million items in the list.

Use the variable, loops, and conditionals instead.

Output something like:

"Jerry"
"Sloane"
"Hurly"