test1.2

#include "fmbf.h"
#include "fmin.h"
#include <set>
#include <string>

//прототипы
void insertStudent ( int *stat );
void findPopularLastName();

struct STUDENT_FOR_TEST
{
    char     FirstName[51];  // Имя
    char     SecondName[51]; // Отчество
    char     LastName[51];   // Фалимлие
    bdate BirthDay;
    //int bdate[3]; //{y, m, d} Дата рождения
};

STUDENT_FOR_TEST testStudentsPool[] = {
    {"Иван", "Иванович", "Иванов", RSL_SCTR_BDATE(1990, 6, 15)},
    {"Дмитрий", "Дмитриевич", "Дмитров",  RSL_SCTR_BDATE(1989, 9, 19)},
    {"Дмитрий", "Дмитриевич", "Дмитров", RSL_SCTR_BDATE(1989, 9, 19)},
    {"Инакентий", "Корнеевич", "Иванов", RSL_SCTR_BDATE(1999, 1, 13)},
};


void workOnDstudent_dbt()
{
    int stat = 0;
    char isOpenFileStudent = 0;

    if ( !FileSTUDENT )
    {
        isOpenFileStudent = 1;
        stat = iOpenSTUDENT( 1 );
    }

    if ( !stat )
    {
        insertStudent( &stat ); //Добавление студентов
        findPopularLastName(); //поиск самой частой фамилии
    }


    // А после работы - закрыть
    if ( FileSTUDENT && isOpenFileStudent )
    {
       bfClose( &FileSTUDENT );
    }
}


void insertStudent ( int *stat )
{
    for (int i=0; i< (sizeof(testStudentsPool) / sizeof(testStudentsPool[0])); i++)
    {
        if(FindSTUDENT_LASTNAME_FIRSTNAME_SECONDNAME(testStudentsPool[i].LastName, testStudentsPool[i].FirstName, testStudentsPool[i].SecondName, NULL)) //поиск записи (будущего дубля)
        {
            STUDENT *recBuf = (STUDENT*)FileSTUDENT->RecBuf;

            bdate BirthDay = testStudentsPool[i].BirthDay;

            memset( recBuf, 0, sizeof(STUDENT) );
            // если бы в TStudent были бы атрибуты типа db_lmoney, необходимо
            // было бы этим атрибутам присвоить значение DB_LMONEY_ZERO

            strcpy(recBuf->FirstName, testStudentsPool[i].FirstName );
            strcpy(recBuf->SecondName, testStudentsPool[i].SecondName );
            strcpy(recBuf->LastName, testStudentsPool[i].LastName );
            recBuf->Birthday = BirthDay;

            // Обратите внимание, StudentID остался равным 0
            *stat = bfOp(FileSTUDENT, Binsert);
        }
    }
}

int countLastName (char *LastName)
{
    int counter = 0;
    STUDENT *recBuf = (STUDENT*)FileSTUDENT->RecBuf;
    SKF_STUDENT_LASTNAMEFIRSTNAMESECONDNAME(LastName, NULL, NULL);

    for( int st=bfGet(FileSTUDENT, BgetF); !st; st=bfGet(FileSTUDENT, BgetN ) )
    {
            counter = counter + 1;
    }
    return counter;
}

void findPopularLastName()
{
    int countPopularLastName = 0;
    char PopularLastName[51];

    set<string> LastNameList;

    STUDENT *recBuf = (STUDENT*)FileSTUDENT->RecBuf;
    SKF_STUDENT_LASTNAMEFIRSTNAMESECONDNAME(NULL, NULL, NULL);

    for( int st=bfGet(FileSTUDENT, BgetF); !st; st=bfGet(FileSTUDENT, BgetN ) )
    {
        LastNameList.insert(string(recBuf->LastName));
    }

    for (auto it = LastNameList.begin(); it != LastNameList.end(); ++it)
    {
        char tLastName[51];
        strcpy(tLastName, it->c_str());

        int tCount = countLastName(tLastName);
        if (countPopularLastName < tCount)
        {
            countPopularLastName = tCount;
            strcpy(PopularLastName, it->c_str());
        }
    }
    //выводим самое популярное
    meswin(PopularLastName);
}