I do not know how to use sort() to list the student names in alphabetical order. I know the general format of it, my prof gave us a page showing it as sort(array.begin(), array.end());
I This code is honestly beyond what we've learned in class (it's only our 2nd assignment of the semester, and my 2nd programming class overall lol) and I've taught myself what I can through YouTube and this site (among so many others) but I'm having a hard time getting this requirement done.
If it helps, the names do not need to be user inputted, they can be initialized and used that way instead. I just found user input easier. Thank you.
header file:
// Definition of class GradeBook that uses an array to store test grades.
#include<string>
#include<iostream>
#include<array>
#include<iomanip> //parameterized stream manipulators
#include<algorithm> //for .sort() .end()
using namespace std;
//GradeBook class definition
class GradeBook{
public:
//constant number of students who took the test
static const size_t students{10}; //note public data
//constructor initializes courseName and grades array
GradeBook(const string& name, const array <int, students>& gradesArray) //array of type int named gradesArray, size of 'students' (10)
: courseName{name}, grades{gradesArray} { }
struct studentInfo
{
string studentName;
int grade;
};
//function to set the course name
void setCourseName(const string& name)
{courseName = name; //store the course name
}
//function to retrieve the course name
const string& getCourseName() const {
return courseName;
}
//display a welcome message to the GradeBook user
void displayMessage() const{
//call getCourseName to get the name of this GradeBooks course
cout << "Welcome to the grade book for \n" << getCourseName()
<< "!" << endl;
}
//perform various operations on the data (none modify the data)
void processGrades() const {
outputGrades(); //output grades array
//call function getAverage to calculate the average grade
cout << setprecision(2) << fixed;
cout << "\nClass average is " <<getAverage() <<endl;
//call functions getMinimum and getMaximum
cout <<"Lowest grade is " << getMinimum()
<<"\nHighest grade is "<< getMaximum() <<endl;
outputBarChart(); //display grade distribution chart
}
//find minimum grade
int getMinimum() const{
int lowGrade{100}; //assume lowest grade is 100
//loop through grades array
for(int grade : grades){
//if current grade lower than lowGrade, assign it to lowGrade
if (grade < lowGrade){
lowGrade = grade; //new lowest grade
}//end if
}//end for
return lowGrade;//return lowest grade
}//end 'getMinimum'
//find maximum grade
int getMaximum() const {
int highGrade{0};//assume highest grade is 0
//loop through grades array
for (int grade : grades){
//if current grade higher than highGrade, assign it to highGrade
if (grade > highGrade){
highGrade = grade; //new highest grade
}//end if
}//end for
return highGrade; //return highest grade
}//end 'getMaximum'
//determine average grade for test
double getAverage() const {
int total{0};//initialize total
//sum grades in array
for (int grade : grades){
total += grade;
}//end for
//return average of grades
return static_cast<double>(total) / grades.size();
}//end 'getAverage'
//output bar chart displaying grade distribution
void outputBarChart() const{
cout << "\nGrade distribution:" <<endl;
//stores frequency of grades in each range of 10 grades
const size_t frequencySize{11};
array<unsigned int, frequencySize> frequency{}; //init to 0s
//for each grade, icnrement the appropriate frequency
for (int grade : grades){
++frequency[grade / 10];
}//end for
//for each grade frequency, print bar in chart
for (size_t count{0}; count < frequencySize; ++count){
//output bar labels ("0-9:", ..., "90-99:", "100:")
if (0 == count){
cout << " 0-9: ";
}//end if
else if(10 == count){
cout << " 100: ";
}//end else if
else{
cout << count * 10 << "-" << (count * 10) + 9 << ": ";
}//end else
//print bar of asteriks
for(unsigned int stars{0}; stars < frequency[count]; ++stars){
cout <<'*';
}//end for
cout << endl; //start a new line of output
}//end for
}//end 'outputBarChart'
//output the contents of the grades array
void outputGrades() const{
int i;
studentInfo info[ students ];
//collect names from user
for(int i=0; i < students; i++)
{
cout << "\nEnter name of student " << i+1 << ": ";
getline(cin, info[i].studentName);
}//end for
cout << endl << "\nStudent roster:\n";
//output each students grades
for (size_t student{0}; student < grades.size(); ++student){
cout << "Student " << setw(2) << info[student].studentName << ": "
<< setw(3) << grades[student] << endl;
}//end for
}//end 'outputGrades'
private:
string courseName; //course name for this grade book
array<int, students> grades; // array of type int called 'grades' of size 'students'(10)
};//end class 'GradeBook'
Main:
//GradeBook.cpp
#include<iostream>
#include <array>
#include<string>
#include<algorithm>
#include "Gradebook2.h" //GradeBook class defintion
int main() {
//array of student grades
const array<int, GradeBook::students> grades{ 87, 68, 94, 100, 83, 78, 85, 91, 76, 87};
string courseName{"COSC 1337"};
GradeBook myGradeBook(courseName, grades);
myGradeBook.displayMessage();
myGradeBook.processGrades();
}//end main
I reached out to one of the tutors for my class and all they advised is that the function outputGrades() is const, so I need to use sort() in a separate function. I really can't wrap my head around how to do it.
