FLOWCHART

• Flowchart

  >diagram that uses symbols to show a sequence of operations

  >uses shapes, arrows and lines
• Terminal block - starting and ending points

  -stop, begin, start, end
• Preparation or Initialization block

  -contains the initial value of variable
• Input or output block

  -accept data for processing

  -display answer as output to the processed data
• Action or process Block

  -process data by writing mathematical equations
• Decision block

  -contains logical expressions

  -"yes" or "no"
• On-page connector - flow continues where matching symbols have been placed on the same page
• Off-page connectors - flow continues where matching symbols have been placed on another page
• Flow line - direction of flow of logic in the program
• Conditional statements

  • perform diff operations
  • 3 kinds

  >if statement - check if a specified condition is true

  >if-else statement - check if condition is true and performs an action if false

  >if-else-if-else - check if one or more blocks of code can be executed
• Switch statement - select one of many blocks of code to be executed
• if block - execute codes within set of braces if condition is satisfied
• Code to be executed is only made up of one line and no need to enclosed in braces
• Switch statement

  • like if statement
  • only one variable is taken to consideration
  • select one or more blocks of code
  • Use break statement to prevent it from continuously executing other blocks after it