The program should read test scores students received on the first quiz of CSCI

Question

The program should read test scores students received on the first quiz of CSCI 2010 into an array.

Write functions to:

?Prompt the user how many students are in class and then read the original scores into a dynamically created array.
?Compute the distribution of scores according to the following scheme, i.e., count number of As, Bs, etc.

A: 90--?100
B: 80--?89
C: 70--?79
D: 60--?69
F: 0--? 59

?Find How many students have the same score.

?Display number of students, the distribution of scores, and number of students with the same score.

Each bullet above should implemented as a function, which is then called by main().

Additional requirements

?Do Not use reference parameters in your functions.
?Pass all arrays to functions as pointers

THIS IS WHAT I HAVE SO FAR: However, I need it not to have a set number of students and not to have a sentinal. and I need all that in the lastScores function. Help me please. I am so close to having this done.

#include <iostream>
#include <iomanip>
#include <string>

using namespace std;

void introductions();

void report(int *scorePointer, int &index, int &numberA, int &numberB, int &numberC, int &numberD, int &numberF, int &students, int &testScore);

void lastScores(int *scorePointer, int &index, const int &LENGTH, int &counter, const int &SENTINAL, int &numberA, int &numberB, int &numberC, int &numberD, int &numberF);

void Grades(int *scorePointer, int &index, int &numberA, int &numberB, int &numberC, int &numberD, int &numberF);

void sameGrades(int *scorePointer, int &index, int &students, int &testScore);

int main()
{
const int LENGTH = 20;
int grade[LENGTH];
int *scorePointer = grade;
int index;
int counter = 1;
const int SENTINAL = -999;
int numberA = 0;
int numberB = 0;
int numberC = 0;
int numberD = 0;
int numberF = 0;
int students = 0;
int testScore = 0;






lastScores(scorePointer, index, LENGTH, counter, SENTINAL, numberA, numberB, numberC, numberD, numberF);

report(scorePointer, index, numberA, numberB, numberC, numberD, numberF, students, testScore);

system ("pause");
return 0;
}




void report(int *scorePointer, int &index, int &numberA, int &numberB, int &numberC, int &numberD, int &numberF, int &students, int &testScore)
{
cout << endl << endl;

cout << " Report " << endl;
cout << " ------ " << endl << endl;
cout << "Number of students: " << index <<endl<<endl;
cout << "Number of As: " << numberA << endl;
cout << "Number of Bs: " << numberB << endl;
cout << "Number of Cs: " << numberC << endl;
cout << "Number of Ds: " << numberD << endl;
cout << "Number of Fs: " << numberF << endl << endl;

sameGrades(scorePointer, index, students, testScore);

cout << endl;

}


void lastScores(int *scorePointer, int &index, const int &LENGTH, int &counter, const int &SENTINAL, int &numberA, int &numberB, int &numberC, int &numberD, int &numberF)
{
{
cout << endl << endl;
cout << " Welcome to the Student Test Score Manager! "<<endl;
cout << endl << endl;
}


int tempScore = 0;

for (index = 0; index < LENGTH; index ++)
{
cout << "Enter test score for student " << counter << " (or -999 to quit): ";
cin >> tempScore;

if (tempScore == SENTINAL || index > LENGTH)
{
break;
}

else
{
counter ++;
scorePointer[index] = tempScore;
Grades(scorePointer, index, numberA, numberB, numberC, numberD, numberF);
cout << endl;
}
}
}


void Grades(int *scorePointer, int &index, int &numberA, int &numberB, int &numberC, int &numberD, int &numberF)
{
const int div = 10;

int gradeNum;

gradeNum = scorePointer[index] / div;

switch (gradeNum)
{
case 10:
case 9:
numberA++;
break;

case 8:
numberB++;
break;

case 7:
numberC++;
break;

case 6:
numberD++;
break;

default:
numberF++;
}
}


void sameGrades(int *scorePointer, int &index, int &students, int &testScore)
{
int i;
while(testScore <= 100)
{
for(i = 0; i < index; i++)
{
if(testScore == scorePointer[i])
{
students++;
}
}
if(students >= 2)
{
cout << students << " Students have the same score: " << testScore <<endl;
students = 0;
}
students = 0;
testScore++;
}
}

Explanation / Answer

#include
#include
#include
class student // base class 1
{
private:
int rl;
char nm[20];
public:
void read();
void display();
};
class marks // base class 2
{
protected:
int s1;
int s2;
int s3;
public:
void getmarks();
void putmarks();
};
class result : public marks, public student // derived from marks and student
{
private:
int t;
float p;
char div[10];
public:
void process();
void printresult();
};
void student::read()
{
cout<<"enter Roll no and Name "< cin>>rl>>nm;

}
void student:: display()
{
cout <<"Roll NO:"<<rl<<endl;
cout<<"name : "<<nm<<endl;
}
void marks ::getmarks()
{
cout<<"enter three subject marks "<<endl;
cin>>s1>>s2>>s3;
}
void marks ::putmarks()
{
cout <<"subject 1:"<<s1<<endl;
cout<<" subject 2 : "<<s2<<endl;
cout <<"subject 3:"<<s3<<endl;
}

void result::process()
{
t= s1+s2+s3;
p = t/3.0;
p>=60?strcpy(div,"first"):p>=50?strcpy(div, "second"): strcpy(div,"third");

}

void result::printresult()
{

cout<<"total = "<<t<<endl;
cout<<"per = "<<p<<endl;
cout<<"div = "<<div<<endl;

}
void main()
{
result x;
clrscr();
x.read();
x.getmarks();
x.process();
x.display();
x.putmarks();
x.printresult();
getch();
}

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