Discuss how we need ways to interpret sets of 0s and 1s to motivate the declaration of types.

  • Cover the following material to motivate this point:
    • Tell students that computers only store 0s and 1s.
    • Explain that we can interpret 0s and 1s as letters or pictures and a lot of other things!
      • Show students an ascii table.
      • Have them convert letters to 0s and 1s.
    • Explain that the computer interprets a 0 as a 0. It looks exactly the same whether it’s a part of a letter or a part of a picture.
    • Next, explain the need to specify how the computer interpret 1s and 0s.
      • This is why it is so important to define the types of variables.
      • For example, the computer will know to interpret 1s and 0s representing the variables x and y differently because of their type declarations.
        • int x = 10;
        • char y = 'a';

More about this tip

External Source

Interview with Aaron Cadle.