Insert string in c++

#include<iostream>
#include<conio.h>
#include<string>
using namespace std;
int main()
{
 string str1="he is a good boy ";
 string str2="and he is honest person.";
 cout << "With out Inserting data in string ONE..:"<< endl << endl << str1 <<  endl;
 cout << "Total size of string ONE.."<< str1.size()<<  endl<<  endl;
 str1.insert(17,str2);     //  insert string2 in string1 after 17 position
 cout << "After Inserting data in string ONE..:"<<endl;
 cout << "................................................:"<< endl ;
 cout << str1 <<  endl;

getch();
}