how to saved query that we run in text file along with date and time

This code is used to run 4 queries add,delete.modify and list but it should also saved query that we run in text file along with date and time

    #include <iostream>
    #include <cstdio>
    #include <cstring>
    #include <cstdlib>
    #include <conio.h>
    #include <iomanip>
    
    using namespace std;
    int main()
    {
        FILE *fp, *ft;
        char another, choice;
    
        struct student
        {
            char first_name[50], last_name[50];
            char course[100];
            int section;
        };
    
        struct student e;
        char xfirst_name[50], xlast_name[50];
        long int recsize;
    
        fp=fopen("users.txt","rb+");
    
        if (fp == NULL)
        {
            fp = fopen("users.txt","wb+");
    
            if (fp==NULL)
            {
                puts("Cannot open file");
                return 0;
            }
        }
    
    
        recsize = sizeof(e);
    
        while(1)
        {
            system("cls");
    
            cout << "\t\t====== STUDENT DATABASE MANAGEMENT SYSTEM ======";
            cout <<"\n\n                                          ";
            cout << "\n\n";
            cout << "\n \t\t\t 1. Add    Records";
            cout << "\n \t\t\t 2. List   Records";
            cout << "\n \t\t\t 3. Modify Records";
            cout << "\n \t\t\t 4. Delete Records";
            cout << "\n \t\t\t 5. Exit   Program";
            cout << "\n\n";
            cout << "\t\t\t Select Your Choice :=> ";
            fflush(stdin);
            choice = getche();
            switch(choice)
            {
            case '1' :
                fseek(fp,0,SEEK_END);
                another ='Y';
                while(another == 'Y' || another == 'y')
                {
                    system("cls");
                    cout << "Enter the Firt Name : ";
                    cin >> e.first_name;
                    cout << "Enter the Last Name : ";
                    cin >> e.last_name;
                    cout << "Enter the Course    : ";
                    cin >> e.course;
                    cout << "Enter the Section   : ";
                    cin >> e.section;
                    fwrite(&e,recsize,1,fp);
                    cout << "\n Add Another Record (Y/N) ";
                    fflush(stdin);
                    another = getchar();
                }
                break;
            case '2':
                system("cls");
                rewind(fp);
                cout << "=== View the Records in the Database ===";
                cout << "\n";
                while (fread(&e,recsize,1,fp) == 1)
                {
                    cout << "\n";
                    cout <<"\n" << e.first_name << setw(10)  << e.last_name;
                    cout << "\n";
                    cout <<"\n" <<e.course <<  setw(8)  << e.section;
                }
                cout << "\n\n";
                system("pause");
                break;
    
            case '3' :
                system("cls");
                another = 'Y';
                while (another == 'Y'|| another == 'y')
                {
                    cout << "\n Enter the last name of the student : ";
                    cin >> xlast_name;
    
                    rewind(fp);
                    while (fread(&e,recsize,1,fp) == 1)
                    {
                        if (strcmp(e.last_name,xlast_name) == 0)
                        {
                            cout << "Enter new the Firt Name : ";
                            cin >> e.first_name;
                            cout << "Enter new the Last Name : ";
                            cin >> e.last_name;
                            cout << "Enter new the Course    : ";
                            cin >> e.course;
                            cout << "Enter new the Section   : ";
                            cin >> e.section;
                            fseek(fp, - recsize, SEEK_CUR);
                            fwrite(&e,recsize,1,fp);
                            break;
                        }
                        else
                            cout<<"record not found";
                    }
                    cout << "\n Modify Another Record (Y/N) ";
                    fflush(stdin);
                    another = getchar();
                }
                break;
    
    
            case '4':
                system("cls");
                another = 'Y';
                while (another == 'Y'|| another == 'y')
                {
                    cout << "\n Enter the last name of the student to delete : ";
                    cin >> xlast_name;
    
                    ft = fopen("temp.dat", "wb");
    
                    rewind(fp);
                    while (fread (&e, recsize,1,fp) == 1)
    
                        if (strcmp(e.last_name,xlast_name) != 0)
                        {
                            fwrite(&e,recsize,1,ft);
                        }
                    fclose(fp);
                    fclose(ft);
                    remove("users.txt");
                    rename("temp.dat","users.txt");
    
                    fp=fopen("users.txt","rb+");
    
                    cout << "\n Delete Another Record (Y/N) ";
                    fflush(stdin);
                    another = getchar();
                }
    
                break;
    
            case '5':
                fclose(fp);
                cout << "\n\n";
                cout << "\t\t     THANK YOU FOR USING THIS SOFTWARE";
                cout << "\n\n";
                exit(0);
            }
        }
    
    
        system("pause");
        return 0;
    }
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