问C++ Sqlite3，执行2条sql语句-第2条语句获取分段核心转储错误

EN

#include <iostream>
#include <sqlite3.h>
#include <vector>

//g++ -o test2 test2.cpp -lsqlite3
using namespace std;

string quotesql( const string& s ) {
    return string("'") + s + string("'");
}


int main()
{
int counter = 0;

    sqlite3 *db;
    sqlite3_stmt * stmt, * stmt2;

string name = "Kungfu Panda2";
string department = "normal";
string password = "hellopassword";

string sqlstatement = "INSERT INTO abe_account (name,department,password) VALUES ("
+quotesql(name) + ","
+quotesql(department) + ","
+quotesql(password) + ");";


    if (sqlite3_open("abeserver.db", &db) == SQLITE_OK)
    {
    sqlite3_prepare( db, sqlstatement.c_str(), -1, &stmt, NULL );//preparing the statement
    sqlite3_step( stmt );//executing the statement
        }
    else
    {
        cout << "Failed to open db\n";
    }

    sqlite3_finalize(stmt);

//after insert ,we select back to get the user id;

sqlstatement = "select * from abe_account where name="
+quotesql(name) + " AND department=" 
+quotesql(department)+";";

    sqlite3_prepare( db, sqlstatement.c_str(), -1, &stmt2, NULL );//preparing the statement
    sqlite3_step( stmt2 );//executing the statement


std::vector< std::vector < std:: string > > result;

while( sqlite3_column_text( stmt2, 0 ) )
{
    for( int i = 0; i < 4; i++ )
    result[i].push_back( std::string( (char *)sqlite3_column_text( stmt2, i ) ) );
    sqlite3_step( stmt2 );
}


   //cout << result.size() << endl;



    sqlite3_finalize(stmt2);
    sqlite3_close(db);





    return 0;

}