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#include <iostream>
#include <fstream>
#include <vector>
using namespace std;
struct course //course structure
{
string coursename; //coursename
int markachieved; //markachieved
};
struct Student //student structure
{
string name; //student name
int ID; //student id
int numberCourses; //number of courses student is taking
vector <course> coursetrack; //course vector for student
};
vector <Student> studentstructures; //Student vector
int main()
{
cout<<"Welcome to the class tracker!"<<endl; //Display welcome message
while (true) //while input is true
{
int input,numberCourses=0,markachieved=0,ID=0,n=0,inputtwo; //integer variables
double average=0,newmark; //average variable
string name,coursename,coursenametwo; //string variables
cout<<"Choose an option."<<endl; //display option menu
cout<<"1) Open a class from a file"<<endl;
cout<<"2) Add a new student"<<endl;
cout<<"3) Change existing student"<<endl;
cout<<"4) Delete a student"<<endl;
cout<<"5) Print a class list (includes the class average)"<<endl;
cout<<"6) Save the class to a file"<<endl;
cout<<"7) Quit"<<endl;
cin>>input; //recieve user input
cin.ignore(); //ignore white spaces
if(input==1) //if user input is 1
{
ifstream InFile("Class.txt"); // locate text file
if (InFile.fail()) //if text file is not there
{
cout << "File: "<< "Class.txt" << " not found"<<endl; //display error message
}
else //if found
{
string line; //create a string variable
while(getline(InFile,line)) // getline returns false at EOF
{
cout << ">" <<line << endl; //display each line in text file
}
cout << "ALL DONE" << endl; // output completion message
}
}
if (input==2) //if user input is 2
{
Student a; //create a student
cout<<"Input the name of the student."<<endl; //ask for name of student
getline(cin, a.name); //receive name
cout<<"Input the ID of the student."<<endl; //asl for ID of Student
cin>>a.ID; // recieve ID
cout<<"Input the number of courses the student is taking."<<endl;//ask user for number of courses student is taking
cin>>a.numberCourses; //recieve number of courses
a.coursetrack.resize(a.numberCourses); //resize the vector
// cout<<"Size: "<<a.coursetrack.size()<<endl; //check
for(int i=0; i<a.numberCourses; i++) //for all the number of courses the student is taking
{
cout<<"Course name?"<<endl; //ask course name
cin>>a.coursetrack[i].coursename; //recieve course name
cout<<"Mark Achieved?"<<endl; //ask mark achieved
cin>>a.coursetrack[i].markachieved; // recieve mark achieved
}
cout<<a.name<<","<<a.ID<<","<<a.numberCourses; //display the studen name,ID,number of courses
for(int i=0; i<a.numberCourses; i++) //for all the students courses
{
cout<<","<<a.coursetrack[i].coursename<<","<<a.coursetrack[i].markachieved; //display coursename,mark achieved
}
studentstructures.push_back(a); //Add Student a, to end of student structure vector
cout<<""<<endl;
}
if(input==3)
{
string cname;
cout<<"Enter the name of the student you want to change."<<endl; //ask for name to change information
getline(cin, cname); //receive name
for (int i=0; i<studentstructures.size(); i++) //for the size of the student structure vector
{
if(cname==studentstructures.at(i).name)
{
cout<<"1) Change a course"<<endl;
cout<<"2) Remove a course"<<endl;
cout<<"3) Add a course"<<endl;
cin>>inputtwo;
if(inputtwo==1)
{
cout<<"Which course do you want to change?"<<endl;
cin>>coursenametwo;
for(int q=0; q<studentstructures.at(i).coursetrack.size(); q++) //for the size of the coursetrack vector
{
if(coursenametwo==studentstructures.at(i).coursetrack[q].coursename)
{
cout<<"Enter the new mark."<<endl;
cin>>studentstructures.at(i).coursetrack[i].markachieved;
}
}
}
if(inputtwo==2)
{
}
}
}
}
if (input==5) //if user inputs option 5
{
cout<<"Name | ID | Course and Mark "<<endl; //display guidline
cout<<"_______________________________________________"<<endl; //border
for (int i=0; i<studentstructures.size(); i++) //for the size of the student structure vector
{
cout<<studentstructures.at(i).name<<" "<<studentstructures.at(i).ID<<" "; //display user name and id
for(int q=0; q<studentstructures.at(i).coursetrack.size(); q++) //for the size of the coursetrack vector
{
cout<<studentstructures.at(i).coursetrack[q].coursename<<","; //display coursename
cout<<studentstructures.at(i).coursetrack[q].markachieved<<","; //display markachieved
}
for(int a=0; a<studentstructures.at(i).coursetrack.size(); a++) //for all the marks
{
average +=(studentstructures.at(i).coursetrack[a].markachieved); //add all marks together
n++; //count number of marks
}
cout<<""<<endl;
}
average=average/n; //calculate average by sum of all marks divided by number of marks
// cout<<"n is:" <<n<<endl;//check
cout<<"The average of the class is: "<<average<<endl; //display average of class
}
if(input==6) //if user inputs 6
{
ofstream OutFile ("Class.txt"); // locate class.txt
if(OutFile.fail()) //if not found
{
cout << "File: "<< "Class.txt" << " not saved"<<endl; //display error message
}
else//if found
{
for (int i=0; i<studentstructures.size(); i++) //for the size of the student structure vector
{
OutFile<<studentstructures.at(i).name<<" "<<studentstructures.at(i).ID<<" "; //display user name and id
for(int q=0; q<studentstructures.at(i).coursetrack.size(); q++) //for the size of the coursetrack vector
{
//cout<<"Num: "<<studentstructures.at(i).coursetrack.size()<<endl;
OutFile<<studentstructures.at(i).coursetrack[q].coursename<<",";//display coursename
OutFile<<studentstructures.at(i).coursetrack[q].markachieved<<","; //display markachieved
}
OutFile<<""<<endl;
}
OutFile.close(); // close the file when done
}
cout<<"Class Saved!"<<endl; //display completion message
}
if(input==7) //if user inputs 7
{
cout<<"Thank you for using the class tracker"<<endl; //display goodbye message
cout<<"Have a good day"<<endl; //display goodbye message
break; //break loop
}
}
return 0;
}
//end of program
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