How to see mouse cursor on output screen of turbo-c dos enviornment...

#include<dos.h>
#include<stdio.h>
#include<conio.h>
union REGS i,o; 
void main()
{
       clrscr(); 
       i.x.ax=1;
       int86(0x33,&i,&o);
       printf("u can see your mouse cursor on output screen");
        getch();
}
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This code is related to mouse programming.......In which ax is register which is declare as 1 for see the mouse cursor on output screen......0x33 is code of mouse port.REGS(registers) which delare as union .also include i,o for input,output.....