c++输出TXT

#include<stdio.h>
#include<iostream.h>
#include<fstream.h>
void main()
{
 ofstream  ost;  
   ost.open ( "C:\Users\Saxon_Home\Desktop\hsx.txt") ;
       for(int i=1;i<=10;i++)
    { ost <<"Happy Birthday";
     for(int j=1;j<=i;j++)
   ost <<"!";
   ost <<endl;}
    ifstream  ist ( "C:\Users\Saxon_Home\Desktop\hsx.txt" );
     
 
ost.close ( ) ;
}