Question

ELEN 1301 Programming Assignment #5.

Purpose of the program : Calculating class grade percentage.

Section 1 : Enter the number of classes you attended (0 ~ 12) 5%.

Section 2 : Enter the discussion board score you earned (0 ~ 120) 5%.

Section 3 : Enter the quiz score you earned (0 ~ 240) 10%.

Section 4 : Enter the programming assignment score you earned (0 ~ 120) 20%.

Section 5 : Enter the midterm exam score you earned (0 ~ 100) 20%.

Section 6 : Enter the final exam score you earned (0 ~ 200) 40%.

Section 7 : Calculate final class grade in percent. You must show the results with four digits below the decimal point.

*/

#include<iostream>

#include<iomanip>

using namespace std;

int main()

{

// Write your code here.

return 0;

//main

}

Answer 1

Here is the completed code for this problem. Comments are included, go through it, learn how things work and let me know if you have any doubts or if you need anything to change. If you are satisfied with the solution, please rate the answer. Thanks

#include <iostream>

#include <iomanip>

using namespace std;

//helper method defined to prompt the user for an integer between min and max, return it if it is valid,

//otherwise, loops until a valid input is given

int getInput(string prompt, int min, int max){

                //setting score below min

                int score=min-1;

                //looping as long as score is invalid

                while(score<min || score>max){

                                //displaying prompt, reading score

                                cout<<prompt;

                                cin>>score;

                                //printing error if score is invalid

                                if(score<min || score>max){

                                               cout<<"The value must be between "<<min<<" and "<<max<<endl;

                                }

                }

                return score; //valid

}

int main(){

                //displaying description

                cout<<"Class grade percentage Calculator."<<endl;

                cout<<"Please input all scores as integers"<<endl;

                //reading all inputs using getInput method

                int classes=getInput("Enter the number of classes you attended (0-12): ", 0, 12);

                int disc_board_score=getInput("Enter the discussion board score you earned (0-120): ", 0, 120);

                int quizzes=getInput("Enter the quiz score you earned (0-240): ", 0, 240);

                int programming=getInput("Enter the programming assignment score you earned (0-120): ", 0, 120);

                int mid_term=getInput("Enter the midterm exam score you earned (0-100): ",0,100);

                int final_exam=getInput("Enter the final exam score you earned (0-200): ",0,200);

               

                //dividing each score by the maximum value for each score and multiply with the

                //percentage to get the resultant score for that part.

                double cls=(double)(classes*5.0)/12.0; //5% of classes

                double disc=(double)(disc_board_score*5.0)/120.0; //5% of discussion board score

                double quiz=(double)(quizzes*10.0)/240.0; //10% of quizzes score

                double prog=(double)(programming*20.0)/120.0;

                double mid=(double)(mid_term*20.0)/100.0;

                double final=(double)(final_exam*40.0)/200.0;

                //summing up all these values to get final percentage

                double percentage=cls+disc+quiz+prog+mid+final;

               

                //using a fixed precision of 4 digits after decimal point

                cout<<setprecision(4)<<fixed;

                //displaying percentage

                cout<<endl<<"Percentage is "<<percentage<<endl;

                return 0;

}

/*OUTPUT*/

Class grade percentage Calculator.

Please input all scores as integers

Enter the number of classes you attended (0-12): 15

The value must be between 0 and 12

Enter the number of classes you attended (0-12): 10

Enter the discussion board score you earned (0-120): 100

Enter the quiz score you earned (0-240): -2

The value must be between 0 and 240

Enter the quiz score you earned (0-240): 137

Enter the programming assignment score you earned (0-120): 119

Enter the midterm exam score you earned (0-100): 50

Enter the final exam score you earned (0-200): 197

Percentage is 83.2750