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Engineering LibreTexts

12.5: Practice 11 Two Way Selection

  • Page ID
    10314
  • Learning Objectives

    With 100% accuracy during a: memory building activity, exercises, lab assignment, problems, or timed quiz/exam; the student is expected to:

    Define the terms on the definitions as listed in the modules associated with this chapter.

    Given pseudocode, write the C++ code for a program that uses the if then else control structure.

    Memory Building Activities

    Link to: MBA 11

    Exercises

    Questions
        1. 25 < 7
        2. 3 < 7
        3. 14 > 7
        4. 17 <= 7
        5. 25 >= 7
        6. 13 == 7
        7. 9 != 7
        8. 5 !> 7
    Answers
        1. 0
        2. 1
        3. 1
        4. 0
        5. 1
        6. 0
        7. 1
        8. Error, the "not greater than" is not a valid operator.
    

    Miscellaneous Items

    Link to: Animated gif showing if then else

    Link to: Manipulation of Data Part 2

    Lab Assignment

    Creating a Folder or Sub-Folder for Chapter 11 Files

    Depending on your compiler/IDE, you should decide where to download and store source code files for processing. Prudence dictates that you create these folders as needed prior to downloading source code files. A suggested sub-folder for the Bloodshed Dev-C++ 5 compiler/IDE might be named:

    • Chapter_11 within the folder named: Cpp_Source_Code_Files

    If you have not done so, please create the folder(s) and/or sub-folder(s) as appropriate.

    Download the Lab File(s)

    Download and store the following file(s) to your storage device in the appropriate folder(s). You may need to right click on the link and select "Save Target As" in order to download the file.

    Download from Connexions: Lab_11_Pseudocode.txt

    Detailed Lab Instructions

    Read and follow the directions below carefully, and perform the steps in the order listed.

    • Create a source code file from the Lab_11_Pseudocode.txt file. Name it: Lab_11.cpp
    • Build (compile and run) your program.
    • After you have successfully written this program, if you are taking this course for college credit, follow the instructions from your professor/instructor for submitting it for grading.

    Problems

    Problem 11a - Instructions

    Create a table with the six relational operators and their meanings.

    Problem 11b - Instructions

    Explain why we are using the "if then else" to manipulate the input data in the example below.

    C++ Source Code
    cout << "\nEnter one side of the rectangle --------->: " ;
    cin >> side1;
    cout << "\nEnter the other side of the rectangle --->: " ;
    cin >> side2;
    
    if (side1 > side2)
      {
      length = side1;
      width = side2;
      }
    else
      {
      length = side2;
      width = side1;
      }