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Control Flow - Coggle Diagram

- - - - Function call and concurrency
    - - Control statements and control structures
    - - Governed by operator precedence and associativity.
        Flow of control among program units.
- - - - Statement head specifies that the body is to be executed some
        fixed number of times
      - Main issues
        
        Can K be reevaluated in the body causing the number of iterations to be changed
        
        What will happen if K is zero or negative
    - - Has a variable
        
        loop variable
      - Some means of specifying the initial and terminal values of the loop variable, and the difference between sequential loop variable values
        
        step-size
      - Design issues
        
        Changing loop variable or parameters inside the loop
        
        Test for loop completion placement
        
        Loop variable defined upon exiting the loop
        
        Evaluation of loop parameters on every iteration
        
        Type and scope of loop counting variable
    - - Repetition control is based on a boolean expression
      - Every counter controlled loop can be built with a logically controlled loop, but not the converse
    - - Several languages have loop statements that have no iteration control mechanism
    - - Rather than a counter or boolean expression controlling the iteration, a data structure is used to control the iteration
      - Number of iterations is controlled by the number of elements in the data structure.
    - - Changing loop variable or parameters inside the loop
      - Test for loop completion placement
      - Loop variable defined upon exiting the loop
      - Evaluation of loop parameters on every iteration
      - Type and scope of loop counting variable
  - - - controls the number of times that the body will be executed
    - - usually a (compound) statement that provides the action of the
        statement