Chapter 4, Problem 35RQE

Each of the following program segments has errors. Find as many as you can.

A)

cout << "Enter your 3 test scores and I will ";

<< "average them:";

int scorel, score2, score3,

cin >> scorel >> score2 >> score3;

double average = (scorel + score2 + score3) / 3.0;

if (average = 100);

perfectScore = true; // Set the flag variable

cout << "Your average is " << average << endl;

bool perfectScore;

if (perfectScore);

cout << "Congratulations!\n";

cout << "That's a perfect score.\n";

cout << "You deserve a pat on the back!\n";

B)

double num1, num2, quotient;

cout << "Enter a number: ";

cin  >> num1;

cout << "Enter another number: ";

cin  >> num2;

if (num2 == 0)

   cout << "Division by zero is not possible.\ n";

   cout << "Please run the program again";

   cout << "and enter a number besides zero.\n";

else

   quotient = num1 / num2;

   cout << "The quotient of " << num1 <<

   cout << " divided by " << num2 << " is ";

   cout << quotient << endl;

C)

int testScore;

cout << "Enter your test score and I will tell you\n";

cout << "the letter grade you earned: ";

cin  >> testScore;

if (testScore < 60)

     cout << "Your grade is F. \n";

else if (testScore < 70)

     cout << "Your grade is D. \ n";

else if (testScore < 80)

     cout << "Your grade is C. \ n";

else if (testScore < 90)

     cout << "Your grade is 8. \ n";

else

     cout << "That is not a valid score.\n";

else if (testScore <= 100)

     cout << "Your grade is A. \n";

D)

double testScore;

cout << "Enter your test score and I will tell you\n";

cout << "the letter grade you earned: ";

cin  >> testScore;

switch (testScore)

{ case (testScore < 60. 0):

             cout << "Your grade is F.\n";

  case (testScore < 70.0):

             cout << "Your grade is D.\n";

  case (testScore < 80.0) :

             cout << "Your grade is C.\n";

  case (testScore < 90.0):

             cout << "Your grade is B.\n";

  case (testScore <= 100.0):

             cout << "Your grade is A.\n";

  default:   cout << "That score isn't valid\n"; }

}