Cpp Project :course manegment

Cpp Project :course manegment

//course manegment

#include<iostream>

#include<cstdio>

#include<string>

#define l 50

using namespace std;

char gr;

int total_course;

class course_class

{

private:

    string course_code;

    string course_title;

    int course_credit;

    string course_instructor;

    float course_result;

public:

    void c_entry (int i);

    void p_info(int i);

    void i_result();

    float conv_result(string result);

    void print_result();

    float cal_cgpa();

} course[15];

//main function start

int main()

{

    int a,i=0;

    while(1)

    {

        cout << "\n\n\n\t\n";

        cout << "\t               WELCOME                                           \n\n\n";

        cout << "\t  1.Press 1 to add a new course.(if you are advisor)              \n";

        cout << "\t  2.Press 2 to input result.(if you are course instructor)       \n";

        cout << "\t  3.Press 3 to get your result.(if you are student)              \n";

        cout << "\t  4.Press 4 to EXIT!!                                            \n";

        cout << "\t                                                                 \n";

        cout << "\t\n";

        cout << "\n                What do you want?(1,2,3,4): ";

        cin >> a;

        while(a<1||a>4)

        {

            cout << "\n\tYour entry was invalid\n";

            cout << "\tPlease select one of the action from the above list: ";

            cin >> a;

        }

        switch(a)

        {

        case 1:

            course[i].c_entry (i);

            course[i].p_info(i);

            i++;

            total_course=i;

            break;

        case 2:

            course[i].i_result();

            break;

        case 3:

            course[i].print_result();

            break;

        }

        if(a==4)

            break;

    }

    return 0;

}

void course_class::c_entry (int i)

{

    gr=getchar();

    cout << "\n\tEnter course code       : ";

    getline(cin,course[i].course_code);

    cout << "\tEnter course title      : ";

    getline(cin,course[i].course_title);

    cout << "\tEnter course credit     : ";

    cin >> course[i].course_credit;

    gr=getchar();

    cout << "\tEnter course instructor : ";

    getline(cin,course[i].course_instructor);

    cout << "\n\t\n";

    cout << "\t   You have successfully added another course.       \n";

    cout << "\t \n\n";

}

void course_class::i_result()

{

    int i;

    string temp,result;

    gr=getchar();

    cout << "\t\n";

    cout << "\t     Enter course code      : ";

    getline(cin,temp);

    cout << "\t     Enter result           : ";

    getline(cin,result);

    cout << "\t\n";

    for(i=0; i<total_course; i++)

    {

        if(temp==course[i].course_code)

            break;

    }

    course[i].course_result=course[i].conv_result(result);

}

float course_class::conv_result(string result)

{

    if(result=="A+" || result=="a+")

        return 4.00;

    if(result=="A" || result=="a")

        return 4.00;

    if(result=="A-" || result=="a-")

        return 3.70;

    if(result=="B+" || result=="b+")

        return 3.30;

    if(result=="B" || result=="b")

        return 3.00;

    if(result=="B-" || result=="b-")

        return 2.70;

    if(result=="C+" || result=="c+")

        return 2.30;

    if(result=="C" || result=="c")

        return 2.00;

    if(result=="C-" || result=="c-")

        return 1.70;

    if(result=="D+" || result=="d+")

        return 1.30;

    if(result=="D" || result=="d")

        return 1.00;

    if(result=="F" || result=="f")

        return 0.00;

}

void course_class::print_result()                                         //print out the final result

{

    int i;

    cout << "\t \n";

    cout << "\t Student Name   : Shadia Islam                 \n";

    cout << "\t Student Id     : 2013-60-047                 \n";

    cout << "\t  \n";

    for(i=0; i<total_course; i++)

    {

        cout << "\t  " << course[i].course_code << "    : " << course[i].course_result << "\n";

    }

    cout << "\n\t  CGPA   : " << cal_cgpa();

    cout << "\n\t  It's Not bad";

    cout << "\n\n";

}

float course_class::cal_cgpa()

{

    int i;

    float total_point=0.0,cgpa;

    int total_credit=0;

    for(i=0; i<total_course; i++)

    {

        total_credit += course[i].course_credit;

        total_point += course[i].course_credit * course[i].course_result;

    }

    return total_point/total_credit;

}

void course_class::p_info(int i)

{

    cout << "\n\tCourse Code       : " << course[i].course_code;

    cout << "\n\tCourse title      : " << course[i].course_title;

    cout << "\n\tCourse Credit     : " << course[i].course_credit;

    cout << "\n\tCourse Instructor : " << course[i].course_instructor;

}