In C++ Design an Essay class that is derived from the GradedActivity class: class GradedActivity{ private:...

In C++

Design an Essay class that is derived from the GradedActivity class: class GradedActivity{ private: double score; public: GradedActivity() {score = 0.0;} GradedActivity(double s) {score = s;} void setScore(double s) {score = s;} double getScore() const {return score;} char getLetterGrade() const; }; char GradedActivity::getLetterGrade() const{ char letterGrade; if (score > 89) { letterGrade = 'A'; } else if (score > 79) { letterGrade = 'B'; } else if (score > 69) { letterGrade = 'C'; } else if (score > 59) { letterGrade = 'D'; } else { letterGrade = 'F'; } return letterGrade; } The Essay class should determine the grade a student receives on an essay. The student's essay score can be up to 100, and is made up of four parts: Grammar: up to 30 points Spelling: up to 20 points Correct length: up to 20 points Content: up to 30 points The Essay class should have a double member variable for each of these sections, as well as a mutator that sets the values of these variables. It should add all of these values to get the student's total score on an Essay. Demonstrate your class in a program that prompts the user to input points received for grammar, spelling, length, and content, and then prints the numeric and letter grade received by the student.

Expert Solution

Thanks for the question.

Below is the code you will be needing Let me know if you have any doubts or if you need anything to change.

Thank You !

===========================================================================

#include<iostream>
using namespace std;

class GradedActivity{
private: double score;
public:
GradedActivity() {
score = 0.0;
}
GradedActivity(double s) {
score = s;
}
void setScore(double s) {
score = s;
}
double getScore() const {
return score;
} char getLetterGrade() const;
};
char GradedActivity::getLetterGrade() const{
char letterGrade; if (score > 89) {
letterGrade = 'A';
}
else if (score > 79) {
letterGrade = 'B';
}
else if (score > 69) {
letterGrade = 'C';
}
else if (score > 59) {
letterGrade = 'D';
}
else { letterGrade = 'F';
}
return letterGrade;
}

class Essay:public GradedActivity{

   private:
       double grammar;
       double spelling;
       double length;
       double content;

   public:
       Essay(): GradedActivity(0){

       }
       Essay(double gr, double sp, double le, double con):GradedActivity(gr+sp+le+con),
       grammar(gr), spelling(sp), length(le), content(con){

       }
       void setGrammar(double score){
           grammar=score;
           GradedActivity::setScore(grammar+spelling+length+content);
       }
       void setSpelling(double score){
           spelling=score;
           GradedActivity::setScore(grammar+spelling+length+content);
       }
       void setLength(double score){
           length=score;
           GradedActivity::setScore(grammar+spelling+length+content);
       }
       void setContent(double score){
           content=score;
           GradedActivity::setScore(grammar+spelling+length+content);
       }

};

int main(){

   Essay essay = Essay(15,10,10,10);

   cout<<"Total Score: "<<essay.getScore()<<", Letter Grade: "<<essay.getLetterGrade()<<endl;
   essay.setGrammar(30);
   essay.setLength(20);
   essay.setContent(30);
   cout<<"Total Score: "<<essay.getScore()<<", Letter Grade: "<<essay.getLetterGrade()<<endl;

}

===================================================================

C:\Users\User\Documents\Untitled5.cpp - [Executing] - Dev-C++ 5.11 File Edit Search View Project Execute Tools AStyle Window Help TDM-GCC 4.9.2 64-bit Release (globals) Untitled5.cpp 34 else f letterGrade = 'F'; } return letterGrade 35 C:Users\User\DocumentsUntitled5.exe 36 Total Score: 45, Letter Grade: F Total Score: 90, Letter Grade: A 37 38 39 E class Essay: public GradedActivity{ 40 private: double grammar double spelling; double length; double content; 41 Process exited after 0.01062 seconds with return value 0 Press any key to continue 42 43 44 45 46 public: Essay() GradedActivity (0) { 47 48F 49 50 } Essay(double gr, double sp, double le, double con):GradedActivity(gr+sp+ grammar (gr), spelling(sp), length(le), content(con){ 51 52 53 } void setGrammar (double score) 54 55E 56 grammar score; setScore(grammar+spelling+length+content); } void setSpelling(double score){ spelling=score; setScore(grammar+spelling+length+content) 57 58 59 60 61 HCompiler Resources dh Compile Log Debug Find Results Close Errors: 0 Warnings o Output Filename: C:\Users\User\Documents\Untitled5.exe Abort Compilation Output Size: 1.83531l093597412 MiB Compilation Time: 1.86s

venereology answered 4 months ago

Design an Essay class that is derived from the GradedActivity class: class GradedActivity{ private: double score;...

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