Exercise 1

For Loop and Switch-Case Exercise

Create a C++ program ex1_caseswitch.cpp with the following code in the Visual Studio project or copy the following code into your other IDE:

/************************************************************
 *
 *       FileName: caseswitch.cpp
 *       Author:   Guili Liu
 *       Purpose:  Demonstrate how to use Switch Statemenet.
 *
 **************************************************************/
#include <iostream>
using namespace std;
int main()
{
    char grade;

//Fill in this for loop so it will repeat six times
    for (   ;   ;   )
    {
        cout << "Please enter a character grade (A, B, C, D, or F): ";
        cin >> grade;

switch (grade)
        {
        case 'A':
            cout << "Great work. " << endl;
            break;

// Add a case for 'B' that prints "Good work."

case 'C':
            cout << "Passing work. " << endl;
            break;
        case 'D':
        case 'F':
            cout << "Unsatisfictory work. " << endl;
            cout << "See your instructor." << endl;
            break;

// Add a default that prints
            //          grade << " is not a legal grade."

} //end of switch statement

} //end of for loop

return 0;

}// end program

The purpose of this program is to demonstrate how to use switch-case statements, and to help you practice writing for loops.

The completed program will use a for loop to ask for 6 letter grades. A switch case statement will give an appropriate message for any letter typed, including error messages for incorrect letters.

Instructions:

Complete the for loop so that the program will ask the user for 6 input grades.
Compile and run this C++ program. Use these input values: A, B, C, D, E, and F.
Notice there is no output for B and E. Add cases for them.

B is "Good Work." Add a case for 'B'.

E is not a legal grade. Add a default: case to handle any unrecognized grades. It should print an error message that includes the invalid grade letter. For example:


Please enter a character grade (A, B, C, D, or F): E
E is not a legal grade.
Please enter a character grade (A, B, C, D, or F): Z
Z is not a legal grade.
Please enter a character grade (A, B, C, D, or F): B
Good Work.
Please enter a character grade (A, B, C, D, or F):

etc.

When you are done:

Take a screenshot that demonstrates all 5 legal grades and an illegal grade in any order to URCourses.
For this exercise, you will have: ex1_caseswitch.cpp.
Complete all the exercises in this option and upload the .cpp files and the screenshots in the URCourses.

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