CCPROG1

• INPUT-PROCESS-OUTPUT 


  The structure of an information processing program or another process
• ALGORITHM 


  An algorithm is a set of a step-by-step instructions to solve a given problem
• In an algorithm, many simple instructions are combined to help form a more complicated operation, which is performed with ease by the computer
• Algorithm follows the IPO model
• Algorithm 


  uses english language/sentence, free-form
• ALGORITHM CHARACTERISTICS

  1. input
  2. output
  3. unambiguity
  4. finiteness
  5. effectiveness
• INPUT


  Zero or more inputs
• OUTPUT


  One or more inputs
• UNAMBIGUITY 


  Clear and simple
• FINITENESS 


  Limited instructions
• EFFECTIVENESS 


  Impact of every step
• VARIABLES ex.


  x=5

  y=3.14

  name= “David”

  bloodtype= ‘O’

  darkmode= True
• RULES IN NAMING VARIABLES

  —names can contain letters, digits and underscore —names must begin with a letter or an undescore

  —names are case-sensitive

  —names cannot contain whitespaces or special characters

  —reserved wordss cannot be used as names
• DATATYPE


  Type of data stored in a variable
• DATATYPE

  1. Integers
  2. Decimals
  3. Character
  4. String
  5. Boolean
• INTEGERS


  negative and positive whole numbers
• DECIMALS


  numbers that lies between whole numbers
• CHARACTER


  letters which can be upper of lower case
• STRING


  words, phrases, and sentences
• BOOLEAN


  has two states TRUE or FALSE
• OPERATORS ( ARITHMETIC OPERATIONS )

  1. multiplication
  2. addition
  3. substraction
  4. division
  5. modulus
• PSEUDOCODE 


  — it is an informal method of developing an algorithm

  — also called false code because it tends to look like a programming language

  — uses highly english language

  — looks like line of code
• KEYWORDS FOR PSEUDOCODE

  1. declare
  2. input
  3. process
  4. output
• DECLARE


  creates a variable
• INPUT


  indicates that a value is from a user
• PROCESS


  perform operations on variable
• OUTPUT


  display something on user's end
• FLOWCHART 


  — type of diagram that represents a workflow or process

  — use symbols and phase to designate the logic of how the problem is solved
• FLOWCHARTING SYMBOLS

  1. terminal
  2. preparation
  3. input/output
  4. decision
  5. processing
  6. on page connector
  7. off page connector