Answer to Question #254575 in C++ for Kirrito

Question

Create structure of Student with following data members Name Reg No CGPA Email ID Create array of 30 students in main function and provide following functionalities Initializing Students Inserting new Student Updating particular student record Deletion of particular student Searching of particular student Sorting all student

Answer 1

#include <iostream>
#include <string>
using namespace std;


struct Student {
    string name;
    int regNo;
    double CGPA;
    string email;
};


void GetStudent(Student& st) {
    cout << "Enter a name of a student: ";
    getline(cin, st.name);
    cout << "Enter reg No: ";
    cin >> st.regNo;
    cout << "Enter CGPA: ";
    cin >> st.CGPA;
    cout << "Enter e-mail: ";
    cin >> st.email;
}


void PrintStudent(const Student& st) {
    cout << "Name: " << st.name << endl;
    cout << "Reg No: " << st.regNo << endl;
    cout << "CGPA: " << st.CGPA << endl;
    cout << "E-mail: " << st.email << endl;
}


void PrintStudents(Student a[], int size) {
    for (int i=0; i<size; i++) {
        PrintStudent(a[i]);
        cout << endl;
    }
}


int main() {
    Student students[30] = {{"Doe John", 12345, 4.5, "[e-mail]"},
                            {"Smith Adams", 23456, 5.0, "[e-mail]"},
                            {"Brown Bob", 13568, 3.3, "[e-mail]"},
                            {"Gates Bill", 98765, 4.2, "[e-mail]"}};
    int nStudent = 4;


    cout << "Add a new student data: " << endl;
    GetStudent(students[nStudent]);
    nStudent++;


    cout << "Students list is:" << endl;
    PrintStudents(students, nStudent);
    cout << endl;


    string name;
    cin.ignore();
    cout << "Enter a name of the student you want to update: ";
    getline(cin, name);
    int i;
    for (i=0; i<nStudent; i++) {
        if (students[i].name == name) {
            break;
        }
    }
    if (i == nStudent) {
        cout << "The student does not found" << endl;
    }
    else {
        PrintStudent(students[i]);
        GetStudent(students[i]);
    }
    PrintStudents(students, nStudent);
    cout << endl;


    cin.ignore();
    cout << "Enter a name of the student you want to delete: ";
    getline(cin, name);
    for (i=0; i<nStudent; i++) {
        if (students[i].name == name) {
            break;
        }
    }
    if (i == nStudent) {
        cout << "The student does not found" << endl;
    }
    else {
        nStudent--;
        for (int j=i; j<nStudent; j++) {
            students[j] = students[j+1];
        }


        cout << "The student " << name << " was delated" << endl;
    }
    PrintStudents(students, nStudent);


    cout << endl << "Sorting students by name" << endl;
    int i_min;
    for (i=0; i<nStudent-1; i++) {
        i_min = i;
        for (int j=i+1; j<nStudent; j++) {
            if (students[j].name < students[i_min].name) {
                i_min = j;
            }
        }
        if (i_min != i) {
            Student tmp = students[i];
            students[i] = students[i_min];
            students[i_min] = tmp;
        }
    }
    PrintStudents(students, nStudent);
}