'Compile error: "Stray 302", on function int86

I write this program in code block but I am having error stray 302 in int86(0x33,®s,®s);. My program is 

#include<stdio.h>
#include<dos.h>
#include<conio.h>
#include<graphics.h>

void theend();

static int mask[]={/*SCREEN MASK*/
           0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,
           0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,
                   0x0000,0x0000,
           /*CURSOR MASK*/
           0x0000,0x0000,0x381c,0x7c3e,0x7c3e,0x7c3e,0x7c3e,
           0x3bdc,0x07e0,0x0ff0,0x0ff0,0x0ff0,0x0ff0,0x07e0,
           0x03c0,0x0000};


void main()
{int gdriver=DETECT,gmode,buttons;
 union REGS regs;
 struct SREGS sregs;
 initgraph(&gdriver,&gmode,"");
 regs.x.ax=0;                        /*INITIALIZE MOUSE*/
 int86(0x33,®s,®s);
 setcolor(LIGHTCYAN);
 if(regs.x.ax==0)
   {outtextxy(0,0,"NO MOUSE AVAILABLE");
    getch();
    theend();
   }
 regs.x.ax=9;                       /*CHANGE CURSOR SHAPE*/
 regs.x.bx=5;
 regs.x.cx=0;
 regs.x.dx=(int)mask;
 segread(&sregs);
 sregs.es=sregs.ds;
 int86x(0x33,®s,®s,&sregs);
 regs.x.ax=1;                       /*SHOW MOUSE POINTER*/
 int86(0x33,®s,®s);
 do
   {regs.x.ax=3;
    int86(0x33,®s,®s);
    buttons=regs.x.bx & 3;
   }while(buttons!=3);
 regs.x.ax=2;                       /*HIDE MOUSE POINTER*/
 int86(0x33,®s,®s);
 theend();
}

void theend()
{closegraph();}

I find some blog where it writes about dos.h file. Is it work full to see the dos.h file? Is there a difference between new dos.h file and old dos.h file?

c++cbgi


Solution 1:[1]

I think you have a problem with your editor. It has changed &reg to the registered trademark sign ®, which is an invalid symbol in a C program.

Compile error "stray \302" means you have an invalid character in your program. In your case, the character is ®. You should change line int86(0x33,®s,®s) to int86(0x33, &regs, &regs);.

For function call int86, the second parameter is input register and third parameter is output register. I think you are trying to use regs for both. Note that it would be better to use two separate variables for input and output. Documentation for int86().

Sources

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Source: Stack Overflow

Solution Source
Solution 1 VLL

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