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  1.     #include <graphics.h>
  2.     #include <stdlib.h>
  3.     #include <stdio.h>
  4.     #include <math.h>
  5.     #define Pi 3.1415926536
  6.     // this function initializes graphics mode
  7.     // it will work only if you're using Borland C++ compiler & BGI drivers
  8.     // if you're using another compiler you should overwrite body of this function
  9.     void init_gr(void)
  10.     {
  11.     /* request autodetection */
  12.     int gdriver = DETECT, gmode, errorcode;
  13.     /* initialize graphics mode */
  14.     initgraph(&gdriver, &gmode, "");
  15.     /* read result of initialization */
  16.     errorcode = graphresult();
  17.     if (errorcode != grOk) /* an error occurred */
  18.     {
  19.     printf("Graphics error: %s\n", grapherrormsg(errorcode));
  20.     printf("Press any key to halt:");
  21.     getch();
  22.     exit(1); /* return with error code */
  23.     }
  24.     }
  25.     // this function shuts graphics mode down
  26.     // it will work only if you're using Borland C++ compiler & BGI drivers
  27.     // if you're using another compiler you should overwrite body of this function
  28.     void end_gr(void)
  29.     {
  30.     closegraph();
  31.     }
  32.     // this function moves CP to (x,y) position
  33.     // it will work only if you're using Borland C++ compiler & BGI drivers
  34.     // if you're using another compiler you should overwrite body of this function
  35.     void MoveTo(int x, int y)
  36.     {
  37.     moveto(x,y);
  38.     }
  39.     // this function draws a line to (x,y) position
  40.     // it will work only if you're using Borland C++ compiler & BGI drivers
  41.     // if you're using another compiler you should overwrite body of this function
  42.     void LineTo(int x, int y)
  43.     {
  44.     lineto(x,y);
  45.     }
  46.     const N=6; // number of points in the figure
  47.     // coordinates of all given points
  48.     enum actions {MOVE,DRAW};
  49.     struct
  50.     {
  51.     actions action;
  52.     int x;
  53.     int y;
  54.     } figure[N]={{MOVE,360,270},{DRAW,360,260},{DRAW,355,260},{DRAW,360,250},
  55.     {DRAW,365,260},{DRAW,360,260}};
  56.     int x0,y0,dx,dy;
  57.     float phi;
  58.     int main(void)
  59.     {
  60.     // initializing graphics mode
  61.     init_gr();
  62.     // rotating about (x0,y0)
  63.     x0=300;
  64.     y0=260;
  65.     // by 10 degrees
  66.     phi=45.0*Pi/180.0;
  67.     // main loop
  68.     for(int i=0;i<8;i++)
  69.     {
  70.     // rotating the figure
  71.     for (int j=0;j<N;j++)
  72.     {
  73.     dx=figure[j].x-x0;
  74.     dy=figure[j].y-y0;
  75.     figure[j].x=x0+dx*cos(phi)-dy*sin(phi);
  76.     figure[j].y=y0+dx*sin(phi)+dy*cos(phi);
  77.     }
  78.     // drawing rotated figure
  79.     for (j=0;j<N;j++)
  80.     if (figure[j].action==MOVE)
  81.     MoveTo(figure[j].x,figure[j].y);
  82.     else
  83.     LineTo(figure[j].x,figure[j].y);
  84.     }
  85.     // clean up
  86.     getch();
  87.     end_gr();
  88.     return 0;
  89.     }
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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Standard input is empty
compilation info 
prog.c:1:26: fatal error: graphics.h: No such file or directory
     #include <graphics.h>
                          ^
compilation terminated.
stdout
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Standard output is empty
https://ideone.com/lGe09j
language:
C99 (gcc 8.3)
created:
6 years ago
visibility:
public

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