Ever try to get a person to do something?
      What if they did it well? enjoyed it? will do it forever?
      BUT... you have to show them EVERY detail - just once.
                               but EVERY DETAIL...

      Programming computers is like that - EVERY detail.

      It's like trying to get a small child to do something.

    

      How hard is it to tell the person what to do?
      Just because you can do it, can you tell somebody else?

            Average 3 Numbers?, Shoes?, Lips?
                  Think!!  Plan!!

            English ==> Franklineze ==> Eriez
            ---------------------------------
   We want to hire a guy from Erie to build a house for us. 
   We speak English.

   Guy from Erie (a great builder) speaks Eriez - no English.
         Eriez is difficult! (just 'tics' and 'tocs').
         Nobody here speaks Eriez - too hard to learn - impossible!

   BUT...
      A guy in Franklin speaks Eriez and Franklineze, but not English.
      Franklineze is pretty easy to learn - could we learn Franklineze ?

   Then we could tell the guy in Franklin to tell guy from Erie what to do!
   

            English ==> C# ==> binary
            -------------------------
   We want to "hire" the computer to do work for us. 
   We speak English.

   The computer (a great worker) speaks binary - no English.
         Binary is difficult! (just ones and zeroes).
         Nobody here speaks binary - too hard to learn - impossible!

   BUT...
      The C# Compiler speaks binary and C#, but not English.
      C# is pretty easy to learn - could we learn C# ?

   Then we could tell the C# compiler to tell the computer what to do!
      

A compiler knows how to speak binary - NOT English!

   But it knows C++, C#, VB, Java, Pascal, FORTRAN, COBOL, etc...

Algorithm in English -> Program Code -> Compiler -> Binary Code -> Computer

C#
  Say "hello" ==>  System.Console.WriteLine("hello");  ==>  010010010010...

C++
  Say "hello" ==>  cout << "hello" << endl;  ==>  010010010010...

Problems:
   Constructing the algorithm
      Logic errors

   Constructing the program
      Syntax errors

     Program executing:
                         
       

     Code:
               
     

Algorithm (steps to solve the problem):
    1. get number from user and convert string to an integer
    2. store the number in a variable
    3. use the variable to square the number by multiplying it by itself
    4. store the result in a different variable
    5. display the original number and the square
    

     Program executing:
                       
       

     Code:
               

          
     Program executing:     
                       
       

     Code:
                             

          
     Program executing: