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Section 7.13 Loops-WE6-P1

Subgoals for Evaluating a Loop.

  1. Identify loop parts
    1. Determine start condition
    2. Determine update condition
    3. Determine termination condition
    4. Determine body that is repeated
  2. Trace the loop
    1. For every iteration of loop, write down values

Subsection 7.13.1

Exercises Exercises

1.
    Q15: What is the output of the following loop?
    for (int m = 0; m < 4; m++)
    {
       for (int n = 5; n >= 0; n--)
       {
          System.out.print("#");
       }
       System.out.println();
    }
    
  • 5 lines of ###
  • 3 lines of #####
  • 4 lines of ######
  • 5 lines of ####
  • Compilation error
2.
    Q16: What is the output of the following loop?
    for (int m = 0; m < 4; m++)
    {
       for (int n = 0; n <= m; n++)
       {
          System.out.print("$");
       }
       System.out.println();
    }
    
    Figure 7.13.1.
  • See diagram for answer A
  • See diagram for answer B
  • See diagram for answer C
  • See diagram for answer D
  • See diagram for answer E
3.
    Q17: What is the output of the following loop?
    for (int m = 1; m < 5; m++)
    {
       for (int n = 1; n <= m; n++)
       {
          System.out.print(" ");
       }
       System.out.println("$");
    }
    
    Figure 7.13.2.
  • See diagram for answer A
  • See diagram for answer B
  • See diagram for answer C
  • See diagram for answer D
  • See diagram for answer E
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