Question

The checkpoint for Lab 7 requires you to define StudentRecord member functions having the following prototypes:

void setNumTests(int);
void setScore(int index, double newVal);

1) Write the complete implementation code for the setNumTests() member function that would appear below the class interface code and above main() in the Lab7Driver.cpp file.

2) Write the complete implementation code for the setScore() member function that would appear below the class interface code and above main() in the Lab7Driver.cpp file.

Answer 1

Note: Could you plz go this code and let me know if u need any changes in this.Thank You
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#include <iostream>
using namespace std;

//Declaring class
class StudentRecord
{
private:
int noOfTests;
double *testScores;
public :
    //Function Declarations
void setNumTests(int);
void setScore(int index, double newVal);
StudentRecord(int);
   double average();
};

//Function Implementations
void StudentRecord::setNumTests(int size)
{
   this->noOfTests=size;
}

StudentRecord::StudentRecord(int size)
{
   setNumTests(size);
   this->testScores=new double[size];
}
void StudentRecord::setScore(int index, double newVal)
{
   testScores[index]=newVal;
}

//This function will calculate the average of test scores
double StudentRecord::average()
{
   double sum=0;
   for(int i=0;i<noOfTests;i++)
   {
       sum+=testScores[i];
   }
   return sum/noOfTests;
}

   int main()
   {
       //Declaring variables
       int size;
       double testScore;
      
       //Getting the input entered by the user
cout<<"Enter no of tests :";
cin>>size;
  
StudentRecord s(size);
  
//Getting the Test Scores entered by the user
for(int i=0;i<size;i++)
{
   cout<<"Enter Test Score#"<<i+1<<":";
   cin>>testScore;
   s.setScore(i,testScore);
       }
      
       //Displaying the average
       cout<<"Average of test Scores :"<<s.average()<<endl;
      
       return 0;
   }

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Output:

_______________.Thank You