Question

please help

Write a simple program with Student class having STL list of Record's structure as a member. 1. Records of the Students are not accessible to the outside world. 2. Student shall output its standing (Freshman, Sophomore etc). 3. A Student can only be created with the name 4. A class can only be added if there is a class name and the passing grade. Driver program creates a Student, adds few classes to the Student's records, then prints student's standing, Your Record and Student objects should be like the following (Note, that is not a complete declaration to implement specification as given. You will need to add something else): struct Record string class_name; char grade; class Student public: Student(string & name); void printRecords(); char gradeForClass(string & cl_name); string standing(); void addClass(string &, char); private: int numclasses Taken; string st name; std::list Records> st_records; • Student::printRecords) • When called from the main(), this function prints the entire Student's record: • classes taken along with their grades. void Student::printRecords() // Your implementation here * Student::standing() When called from the main(), this function should output: "Freshman", "Sophomore", "Junior", "Senior", • depending on the number of classes successfully(!) taken. • The exact implementation (in the part of • how many classes needed to advance to the next level) is up to you. But this function should not iterate over the list of Records, or call std::list's .size() to determine the number of classes. You have a variable for that in

Answer 1

PROGRAM:

#include <iostream> // To input and output operation from console.
#include <list> // STL list , to store object of structure Records
#include <string> // To perform operation related string like comparison,etc.
#include <iterator> // To iterate the list.
using namespace std;

struct Records // Define structure with two attributes
{
string class_name;
char grade;
};
class Student // Define class
{
public:
Student(string& name) // Define constructor
{
this->st_name=name; // Initialize the name.
numClassesTaken = 0; // Initially set the total number of class taken by student as zero.
}
void printRecords(); // Declare method to print all records about student.
char gradeForClass(string& cl_name); // To find the grade of given class.
string standing(); // To find the standing of student/
void addClass(string&, char); // To add class.
private:
int numClassesTaken; // To keep the track of clssses
string st_name; /// To store name of student
list<Records> st_records; // Declare list with type of structure named Records.
};
void Student::printRecords()
{
cout << "\nName Of Student : " << st_name; // Printing all details of student.
cout << "\nNumber of Classes taken : " << numClassesTaken;
for (const Records& record : st_records) // Iterate the list
{
cout << "\nClass name : " << record.class_name; // Print each class name
cout << "\nGrade : " << record.grade; // Peint grade for that class
}
}
string Student::standing()
{
int classesTaken = st_records.size(); // Caculate number of class attend by student
if (classesTaken >= 0 && classesTaken <= 3) // Check condition to find standing of student
{   
return "Freshman";
}
else if (classesTaken >= 4 && classesTaken <= 6) // Check condition to find standing of student
{
return "Sophomore";
}
else if (classesTaken >= 7 && classesTaken <= 10) // Check condition to find standing of student
{
return "Junior";
}
else
{
return "Senior"; // If student attend more than 10 class.
}
}
char Student::gradeForClass(string &cl_name)
{

for (const Records& record : st_records) // Iterate the list.
{
if (cl_name.compare(record.class_name) == 0) // Compare the given class with each object.
{
return record.grade; // If match the class return grade.
}
}
return 'F'; // Otherwise return F as grade.

}void Student::addClass(string & class_name,char grade )
{
int flag = 0; // Initially set the flag as zero.
for (const Records& record : st_records) // Iterate the list.
{
if (record.class_name.compare(class_name) == 0) // If class name match with previouslly entered class name
{
flag = 1; // Set flag as zero
break; // Break the loop
}
}
if (flag != 1) // If class is not taken previouslly.
{
numClassesTaken++; // Inrement number of class taken.
struct Records r; // Make object of structure.
r.class_name = class_name; // Initialize the name of class.
r.grade = grade; // Initialize the grade of class.
list<Records>::iterator it;
it = st_records.end(); // Take the address of last object.
st_records.insert(it, r); // Insert at the end of list.
}
else
{ // If class is already in list, print this message.
cout << "\n" << class_name << " is taken already! Please enter other class.";
}
}
int main()
{
string name, classname;
char grade;
cout << "Enter Name of Student : ";
getline(cin,name); // Taking name of student
Student student(name); /// Creating object of class student
cout << "\nDo you want to add class : \n Yes -> y\n No -> n\n (y/n)?";
cin >> name; // Read choice
while (name.compare("y") == 0) // Iterate the loop untill user like to stop.
{
cout << "\nEnter name of class : "; // get details
cin >> classname;
cout << "\nEnter Grade : ";
cin >> grade;
student.addClass(classname, grade); /// Call the function to add class in list
cout << "\nDo you want to add class again :\n Yes -> y\n No -> n\n (y/n)?";
cin >> name; // Again asked to enter other class.
}
cout << "\n################# YOUR DETIALS #################\n";
student.printRecords(); // Print the details by calling the function
cout << "\nYour standing : " << student.standing(); // Find the standing of student.
cout << "\n\n####################################################\n";
cout << "\n Do you want to find grade of any class?\n Yes -> y\n No -> n\n (y/n)";
cin >> name; // Read choice of student to find the grade of any class.
while(name.compare("y") == 0) // Iterate the loop untill user like to stop.
{
cout << "\nPlease enter class name : ";
cin >> classname; // Read the class name and pass as parameter in function call
cout << "\nYour Grade in class " << classname << " is " << student.gradeForClass(classname); // print the grade of class
cout << "\n Do you want to find grade of any class again?\n Yes -> y\n No -> n\n (y/n)";
cin >> name; // Again ask to find.
}
cout << "\n Thank you!"; // Print the message
return 0;
}

OUTPUT:

SCREENSHOT OF PROGRAM: