Question

// Lab Homework 11
// Logical Operator AND and OR
// Demonstrate how to use a logical operator
// with a Boolean expression.

#include <iostream>
#include <cctype> // for tolower()
using namespace std;

int main()
{
   int numberOfCreditHours; // Number of credit hours student has completed
   float gpa; // The student's cumulative grade point average

   // Ask the user two questions:
   cout << "Answer the following questions:" << endl << endl;

   cout << "How many credit hours have you completed (0-200): ";
   cin >> numberOfCreditHours;

   cout << "What is your cumulative GPA (0.00-4.00)? ";
   cin >> gpa;

   cout << endl;

   // TODO: Students can petition for graduation if:
   // - they have completed 48+ credit hours
   // - they have a GPA of 2.0 or greater
   //
   // Use Logical operators in complex logical expressions to decide which of the following
   // four messages to print:
   //
   // 1) You may petition for graduation.
   // 2) You must raise your GPA before you can graduate.
   // 3) You must complete more credit hours before you can graduate.
   // 4) You must raise your GPA and complete more credits before graduating.
   //
   // Use just ONE of the logical operators below in the expression
   // to choose the approprate message. You MAY use the chosen operator
   //       more than once.
   //
   // Logical AND: &&
   // Logical OR: ||
   //
   // Note: Do NOT worry about situations where the user doesn't enter Y, y, N, or n

   // Use the if structure provided below.

   if // (<write a compound logic expression here for graduating>)
       //graduation message

   else if // (<write a compound logic expression here for too low gpa>)
       //raise gpa message

   else if // (<write a compound logic expression here for too few credits>)
       //complete more credits message

   else // else is good enough, no logic expression needed - it's the only other possibility
       // raise gpa and earn more credits message

   cout << endl << endl;

   return 0;
}

/* Sample interaction and output:

Test #1
==========================================
Answer the following questions:

How many credit hours have you completed (0-200): 60
What is your cumulative GPA (0.00-4.00)? 3.75

You may petition for graduation.

Press any key to continue . . .

Test #2
==========================================
Answer the following questions:

How many credit hours have you completed (0-200): 60
What is your cumulative GPA (0.00-4.00)? 1.99

You must raise your GPA before you can graduate.

Press any key to continue . . .

Test #3
==========================================
Answer the following questions:

How many credit hours have you completed (0-200): 47
What is your cumulative GPA (0.00-4.00)? 3.25

You must complete more credit hours before you can graduate.

Press any key to continue . . .

Test #4
==========================================
Answer the following questions:

How many credit hours have you completed (0-200): 45
What is your cumulative GPA (0.00-4.00)? 1.75

You must raise your GPA and complete more credits before graduating.

Press any key to continue . . .

*/

Answer 1

If you have any doubts, please give me comment...

// Lab Homework 11

// Logical Operator AND and OR

// Demonstrate how to use a logical operator

// with a Boolean expression.

#include <iostream>

#include <cctype> // for tolower()

using namespace std;

int main()

{

    int numberOfCreditHours; // Number of credit hours student has completed

    float gpa;               // The student's cumulative grade point average

    // Ask the user two questions:

    cout << "Answer the following questions:" << endl

         << endl;

    cout << "How many credit hours have you completed (0-200): ";

    cin >> numberOfCreditHours;

    cout << "What is your cumulative GPA (0.00-4.00)? ";

    cin >> gpa;

    cout << endl;

    // TODO: Students can petition for graduation if:

    // - they have completed 48+ credit hours

    // - they have a GPA of 2.0 or greater

    //

    // Use Logical operators in complex logical expressions to decide which of the following

    // four messages to print:

    //

    // 1) You may petition for graduation.

    // 2) You must raise your GPA before you can graduate.

    // 3) You must complete more credit hours before you can graduate.

    // 4) You must raise your GPA and complete more credits before graduating.

    //

    // Use just ONE of the logical operators below in the expression

    // to choose the approprate message. You MAY use the chosen operator

    //       more than once.

    //

    // Logical AND: &&

    // Logical OR: ||

    //

    // Note: Do NOT worry about situations where the user doesn't enter Y, y, N, or n

    // Use the if structure provided below.

    if (numberOfCreditHours > 48 && gpa >= 2.0) // (<write a compound logic expression here for graduating>)

        //graduation message

        cout << "You may petition for graduation." << endl;

    else if (numberOfCreditHours > 48 && gpa < 2.0) // (<write a compound logic expression here for too low gpa>)

        //raise gpa message

        cout << "You must raise your GPA before you can graduate." << endl;

    else if (numberOfCreditHours <= 48 && gpa > 2.0) // (<write a compound logic expression here for too few credits>)

        //complete more credits message

        cout << "You must complete more credit hours before you can graduate." << endl;

    else // else is good enough, no logic expression needed - it's the only other possibility

        // raise gpa and earn more credits message

        cout << "You must raise your GPA and complete more credits before graduating." << endl;

    cout << endl

         << endl;

    return 0;

}

nagarajuanagaraju-Vostro-3550:26092019$ g++ lab hw11.cpp nagarajuanagaraju-Vostro-3550:26092019$ ./a.out, Answer the following questions: How many credit hours have you completed (0-200): 60 What is your cumulative GPA (0.00-4.00)? 3.75 You may petition for graduation. nagarajuanagaraju-Vostro-3550:26092019$ ./a.out Answer the following questions: How many credit hours have you completed (0-200): 60, What is your cumulative GPA (0.00-4.00)? 1.99 You must raise your GPA before you can graduate. nagaraju@nagaraju-Vostro-3550:26092019$ /a.out, Answer the following questions: How many credit hours have you completed (0-200): 47 What is your cumulative GPA (0.00-4.00)? 3.25 You must complete more credit hours before you can graduate. nagarajuanagaraju-Vostro-3550:26092019$ ./a.out, Answer the following questions: How many credit hours have you completed (0-200): 45 What is your cumulative GPA (0.00-4.00)? 1.75 You must raise your GPA and complete more credits before graduating.