I'm working on the SQL analogue in C+++ There's been an exception: a violation of reading rights...Pnext, although the data are recorded normally.

[baileigh]

void FindAllDatabaseColumns_1(const DatabaseInfo& pDatabaseInfo, string pDatabaseName, map<int, string>* pColumns, DatabaseInfo* pDatabaseColumns)
{
    string DatabaseColumns = "";
    map<int, string> lColumns;
    int lCounter = 1;
    DatabaseInfo lDatabaseColumns;
    lDatabaseColumns = *pDatabaseColumns;
    for (const Knot* p = pDatabaseInfo.begin(); p != NULL; p = p->next)
    {
        if (p->DatabaseName == pDatabaseName)
        {
            lColumns.insert(make_pair(lCounter, p->DatabaseColumn));
            lDatabaseColumns.AddColumn(p->DatabaseName, p->DatabaseColumn, p->ColumnTypeOfData);
            DatabaseColumns = DatabaseColumns + "|" + p->DatabaseColumn;
            lCounter++;
        }
    }
    DatabaseColumns = DatabaseColumns + "|";
    *pDatabaseColumns = lDatabaseColumns;
    *pColumns = lColumns;
    for (auto& IColumns : lColumns)
    {
        cout << IColumns.first << "\t" << IColumns.second << endl;
    }
}

My class is where it says DatabaseInfo Honestly, there's a lot of code, but it's on the prototype list. Here. header class can help. ♪ ♪

If I have to, I can download the rest of the project code.

That's a mistake.

Honestly, it would be interesting to know why he made a mistake to do everything right and understand the work. C++!

[nishika]

The question's up. You should have used:

pDatabaseColumns->AddColumn(p->DatabaseName, p->DatabaseColumn, p->ColumnTypeOfData);

and:

*pDatabaseColumns = lDatabaseColumns;

and records lDatabaseColumns♪

void FindAllDatabaseColumns_1(const DatabaseInfo& pDatabaseInfo, string pDatabaseName, map<int, string>* pColumns, DatabaseInfo *pDatabaseColumns)
{
    string DatabaseColumns = "";
    map<int, string> lColumns;
    int lCounter = 1;
    DatabaseInfo lDatabaseColumns;
    //lDatabaseColumns = *pDatabaseColumns; //и возможно из-за этой
    for (const Node* p = pDatabaseInfo.begin(); p != NULL; p = p->next)
    {
        if (p->DatabaseName == pDatabaseName)
        {
            lColumns.insert(make_pair(lCounter, p->DatabaseColumn));
            //lDatabaseColumns.AddColumn(p->DatabaseName, p->DatabaseColumn, p->ColumnTypeOfData);
            pDatabaseColumns->AddColumn(p->DatabaseName, p->DatabaseColumn, p->ColumnTypeOfData);
        DatabaseColumns = DatabaseColumns + "|" + p-&gt;DatabaseColumn;
        lCounter++;
    }
}
DatabaseColumns = DatabaseColumns + "|";
//*pDatabaseColumns = lDatabaseColumns; //вот из-за этой строки ошыбка
*pColumns = lColumns; 
for (auto&amp; IColumns : lColumns)
{
    cout &lt;&lt; IColumns.first &lt;&lt; "\t" &lt;&lt; IColumns.second &lt;&lt; endl;
}

}