===== grapherrormsg =====


====Syntax of grapherrormsg ==== 
 <code c>
#include <graphics.h>
char * grapherrormsg(int errorcode);
  </code>


==== Description of grapherrormsg ==== 
<code c>
grapherrormsg returns a pointer to the error message string associated
with errorcode, the value returned by graphresult.
Refer to the entry for errno in the Library Reference, Chapter 4, for a
list of error messages and mnemonics.
</code>


==== Example of grapherrormsg ====
<code c>
/* grapherrormsg example */

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

#define NONSENSE -50

int main(void)
{
   /* force an error to occur */
   int gdriver = NONSENSE, gmode, errorcode;

   /* initialize graphics mode */
   initgraph(&gdriver, &gmode, "");

   /* read result of initialization */
   errorcode = graphresult();

   /* if an error occurred, then output descriptive error message*/
   if (errorcode != grOk) {
printf("Graphics error: %s\n", grapherrormsg(errorcode));

printf("Press any key to halt:");
getch();
exit(1);   /* terminate with an error code */
   }


   /* draw a line */
   line(0, 0, getmaxx(), getmaxy());

   /* clean up */
   getch();
   closegraph();
   return 0;
}
</code>


==== See also ====
[[graphresult]]


===== output of grapherrormsg example ===== 

    no output of example at the moment
    do not hesitate and add it...