//Receive data from rows and columns of the DataBase
...
DLLFUNC char* sqlite__select(int r, int c)
{
 //return char value on rows [r] and Column [c]
  return ((char*)result[r][c].c_str());
        
}
...

void test_select()
{

int rows = sqlite_rows(); //Total de rows (sample 100 rows)

for(ping = 0; ping < rows; ping ++)
{
//ID			
printf("%s",sqlite_select(ping,0)); //return 0..1..2..3..4..n
//test0
printf("%s",sqlite_select(ping,1)); //return 0..1..2..3..4..n
//test1
printf("%s",sqlite_select(ping,3)); //return 0..1..2..3..4..n
.... test100

}

DLLFUNC char* sqlite__select(char* buffer, int r, int c)
{
    if (buffer != NULL)
        strcpy(buffer, result[r][c].c_str());
        
    return buffer;
}

void test_select ()
{
    int rows = sqlite_rows();
    
    char buffer [256];
    
    int ping;
    for (ping = 0; ping < rows; ping++)
    {
        printf("%s", sqlite_select(buffer, ping, 0));
        printf("%s", sqlite_select(buffer, ping, 1));
        printf("%s", sqlite_select(buffer, ping, 3));
    }
}