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Thursday 12 September 2013

grapherrormsg example in c

Header file:
    graphics.h

Synopsis:
      char * grapherrormsg(int errorno);
     errorno - error code returned by graphresult()
     
Description:
     grapherrormsg() returns a pointer to string containing error message.


grapherrormsg function in c graphics



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

  int main() {
        /* request auto detection */
        int graphicDriver = DETECT, graphicMode;
        int err, midx, midy;
        int circleRadius = 150;

        /* initialize graphics system */
        initgraph(&graphicDriver, &graphicMode,
                                        "C:/TURBOC3/BGI");
        err = graphresult();

        if (err != grOk) {
                /* error occurred */
                printf("Graphic Error: %s\n",
                                grapherrormsg(err));
                return 0;
        }

        /* mid position x and y-axis */
        midx = getmaxx() / 2;
        midy = getmaxy() / 2;

        /* sets the current drawing color and fill style */
        setcolor(GREEN);
        setfillstyle(SOLID_FILL, GREEN);

        /* draws a circle at the center of the graphic screen */
        circle(midx, midy, circleRadius);

        /* fill the bounded area using the given fill color */
        floodfill(midx, midy, GREEN);

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





Output: (grapherrormsg built-in function in c graphics.h)


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