Question

The switch Statement

C++program

This lab work with the switch statement.

• Remove the break statements from each of the cases. What is the effect on the execution of the program?

• Add an additional switch statement that allows for a Passing option for a grade of D or better. Use the sample run given below to model your output.

Sample Run: What grade did you earn in Programming I?

YOU PASSED! An A - excellent work!

The following is the code to be used:

// This program illustrates the use of the Switch statement.

// PLACE YOUR NAME HERE

#include <iostream>

using namespace std;

int main()

{

char grade;

cout << "What grade did you earn in Programming I ?" << endl;

cin >> grade;

switch( grade ) // This is where the switch statement begins

{

case 'A': cout << "an A - excellent work !" << endl;

break;

case 'B': cout << "you got a B - good job" << endl;

break;

case 'C': cout << "earning a C is satisfactory" << endl;

break;

case 'D': cout << "while D is passing, there is a problem" << endl;

break;

case 'F': cout << "you failed - better luck next time" << endl;   

break;

default: cout << "You did not enter an A, B, C, D, or F" << endl;

}

return 0;

}

Answer 1

Given below is the modified code for the question. Please do rate the answer if it helped. Thank you.

When you remove the break statement, all the cases starting from the case for the given grade are executed. For example, if input is C, then the cout statement for grade C, D, F , default are all executed.

// This program illustrates the use of the Switch statement.
// PLACE YOUR NAME HERE
#include <iostream>
using namespace std;
int main()
{
   char grade;
   cout << "What grade did you earn in Programming I ?" << endl;
   cin >> grade;
  
   switch(grade)
   {
       case 'A':
       case 'B':
       case 'C':
       case 'D':
           cout << "YOU PASSED!";
   }
  
   switch( grade ) // This is where the switch statement begins
   {
   case 'A': cout << "an A - excellent work !" << endl;
   break;
   case 'B': cout << "you got a B - good job" << endl;
   break;
   case 'C': cout << "earning a C is satisfactory" << endl;
   break;
   case 'D': cout << "while D is passing, there is a problem" << endl;
   break;
   case 'F': cout << "you failed - better luck next time" << endl;   
   break;
   default: cout << "You did not enter an A, B, C, D, or F" << endl;
   }
return 0;
}

output
---
What grade did you earn in Programming I ?
A
YOU PASSED!an A - excellent work !