PRESS ME BUTTON GAME in C using graphics.h

Press me game in C:- In this game when you try to bring mouse near a button it moves away from the mouse, so you keep on trying pressing the button. In this game we have the coordinates of current position of mouse pointer at every moment of time, whenever we find mouse pointer very close to button we move the button suitably.

C programming code

#include <stdio.h>
#include <conio.h>
#include <dos.h>
#include <graphics.h>
#include <stdlib.h>
 
union REGS i, o;
int left = 265, top = 250;
 
void initialize_graphics_mode()
{
  int gd = DETECT, gm, error;
 
  initgraph(&gd,&gm,"C:\\TC\\BGI");
 
  error = graphresult();
 
  if (error != grOk)
  {
    perror("Error ");
    printf("Press any key to exit...\n");
    getch();
    exit(EXIT_FAILURE);
  }
}
 
void showmouseptr()
{
  i.x.ax = 1;
  int86(0x33,&i,&o);
}
 
void hidemouseptr()
{
  i.x.ax = 2;
  int86(0x33,&i,&o);
}
 
void getmousepos(int *x,int *y)
{
  i.x.ax = 3;
  int86(0x33,&i,&o);
 
  *x = o.x.cx;
  *y = o.x.dx;
}
 
void draw_bar()
{
  hidemouseptr();
  setfillstyle(SOLID_FILL,CYAN);
  bar(190,180,450,350);
  showmouseptr();
}
 
void draw_button(int x, int y)
{
  hidemouseptr();
  setfillstyle(SOLID_FILL,MAGENTA);
  bar(x,y,x+100,y+30);
  moveto(x+5,y);
  setcolor(YELLOW);
  outtext("Press me");
  showmouseptr();
}
 
void draw()
{
  settextstyle(SANS_SERIF_FONT,HORIZ_DIR,2);
  outtextxy(155,451,"<a href="http://www.cprogrammingforbca.blogspot.in"">www.cprogrammingforbca.blogspot.in"</a>);
  setcolor(BLUE);
  rectangle(0,0,639,450);
  setcolor(RED);
  outtextxy(160,25,"Try to press the \"Press me\" button");
  outtextxy(210,50,"Press escape key to exit");
  setfillstyle(XHATCH_FILL,GREEN);
  setcolor(BLUE);
  bar(1,1,75,449);
  bar(565,1,638,449);
  showmouseptr();
  draw_bar();
  draw_button(left,top);
}
 
void initialize()
{
  initialize_graphics_mode();
 
  if( !initmouse() )
  {
    closegraph();
    printf("Unable to initialize the mouse");
    printf("Press any key to exit...\n");
    getch();
    exit(EXIT_SUCCESS);
  }
 
  draw();
}
 
int initmouse()
{
  i.x.ax = 0;
  int86(0x33,&i,&o);
  return ( o.x.ax );
}
 
void get_input()
{
  int x, y;
 
  while(1)
  {
    getmousepos(&x,&y);
 
    /* mouse pointer in left of button */
 
    if( x >= (left-3) && y >= (top-3) && y <= (top+30+3) && x < left )
    {
      draw_bar();
      left = left + 4;
 
      if (left > 350)
        left = 190;
 
      draw_button(left,top);
    }
 
    /* mouse pointer in right of button */
 
    else if (x<=(left+100+3)&&y>=(top-3)&&y<=(top+30+3)&&x>(left+100))
    {
      draw_bar();
      left = left - 4;
 
      if (left < 190)
        left = 350;
 
      draw_button(left,top);
    }
 
    /* mouse pointer above button */
 
    else if(x>(left-3) && y>=(top-3) && y<(top) && x<= (left+100+3))
    {
      draw_bar();
      top = top + 4;
 
      if (top > 320)
        top = 180;
 
      draw_button(left,top);
    }
 
    /* mouse pointer below button */
 
    else if (x>(left-3)&&y>(top+30)&&y<=(top+30+3)&&x<=(left+100+3))
    {
      draw_bar();
      top = top - 4;
 
      if (top < 180)
        top = 320;
 
      draw_button(left,top);
    }
 
    if (kbhit())
    {
      if (getkey() == 1)
        exit(EXIT_SUCCESS);
    }
  }
}
 
int getkey()
{
  i.h.ah = 0;
  int86(22,&i,&o);
 
  return( o.h.ah );
}
 
main()
{
  initialize();
 
  get_input();
  return 0;
}

PAINT program in C using graphics.h & other functions

Paint program in c:- This program can draw different shapes using mouse such as line, circle, pixel and many other shapes. You can also change the color, clear the screen. Code of paint program in c is given below:-

/* To understand the code see output below the code, it will help you in understanding the code. */

C programming code

#include<graphics.h>
#include<dos.h>
#include<math.h>
#include<stdlib.h>
#include<stdio.h>
#include<conio.h>
 
union REGS i, o;
int leftcolor[15];
 
int get_key()
{
   union REGS i,o;
 
   i.h.ah = 0;
   int86(22,&i,&o);
 
   return ( o.h.ah );
}
 
void draw_color_panel()
{
   int left, top, c, color;
 
   left = 100;
   top = 436;
 
   color = getcolor();
   setcolor(GREEN);
   rectangle(4,431,635,457);
   setcolor(RED);
   settextstyle(TRIPLEX_FONT,0,2);
   outtextxy(10,431,"Colors : ");
 
   for( c = 1 ; c <= 15 ; c++ )
   {
      setfillstyle(SOLID_FILL, c);
      bar(left, top, left+16, top+16);
      leftcolor[c-1] = left;
      left += 26;
   }
 
   setcolor(color);
}
 
void draw_shape_panel()
{
   int left, top, c, color;
 
   left = 529;
   top = 45;
 
   color = getcolor();
   setcolor(GREEN);
   rectangle(525,40,633,255);
 
   for( c = 1 ; c <= 7 ; c++ )
   {
      rectangle(left, top, left+100, top+25);
      top += 30;
   }
   setcolor(RED);
   outtextxy(530,45,"Bar");
   outtextxy(530,75,"Line");
   outtextxy(530,105,"Pixel");
   outtextxy(530,135,"Ellipse");
   outtextxy(530,165,"Freehand");
   outtextxy(530,195,"Rectangle");
   outtextxy(530,225,"Clear");
   setcolor(color);
}
 
void change_color(int x, int y)
{
   int c;
 
   for( c = 0 ; c <= 13 ; c++ )
   {
      if( x > leftcolor[c] && x < leftcolor[c+1] && y > 437 && y < 453 )
         setcolor(c+1);
      if( x > leftcolor[14] && x < 505 && y > 437 && y < 453 )
         setcolor(WHITE);
   }
}
 
char change_shape(int x, int y)
{
   if ( x > 529 && x < 625 && y > 45 && y < 70 )
      return 'b';
   else if ( x > 529 && x < 625 && y > 75 && y < 100 )
      return 'l';
   else if ( x > 529 && x < 625 && y > 105 && y < 130 )
      return 'p';
   else if ( x > 529 && x < 625 && y > 135 && y < 160 )
      return 'e';
   else if ( x > 529 && x < 625 && y > 165 && y < 190 )
      return 'f';
   else if ( x > 529 && x < 625 && y > 195 && y < 220 )
      return 'r';
   else if ( x > 529 && x < 625 && y > 225 && y < 250 )
      return 'c';
}
 
void showmouseptr()
{
   i.x.ax = 1;
   int86(0x33,&i,&o);
}
 
void hidemouseptr()
{
   i.x.ax = 2;
   int86(0x33,&i,&o);
}
 
void restrictmouseptr( int x1, int y1, int x2, int y2)
{
   i.x.ax = 7;
   i.x.cx = x1;
   i.x.dx = x2;
   int86(0x33,&i,&o);
 
   i.x.ax = 8;
   i.x.cx = y1;
   i.x.dx = y2;
   int86(0x33,&i,&o);
}
 
void getmousepos(int *button,int *x,int *y)
{
   i.x.ax = 3;
   int86(0x33,&i,&o);
 
   *button = o.x.bx;
   *x = o.x.cx;
   *y = o.x.dx;
}
 
main()
{
   int gd = DETECT,gm;
 
   int maxx,maxy,x,y,button,prevx,prevy,temp1,temp2,key,color;
   char ch = 'f' ;            // default free-hand drawing
 
   initgraph(&gd,&gm,"C:\\TC\\BGI");
 
   maxx = getmaxx();
   maxy = getmaxy();
 
   setcolor(BLUE);
   rectangle(0,0,maxx,maxy);
 
   setcolor(WHITE);
   settextstyle(SANS_SERIF_FONT,HORIZ_DIR,2);
   outtextxy(maxx/2-180,maxy-28,"<a href="http://www.cprogrammingforbca.blogspot.com"">www.cprogrammingforbca.blogspot.in"</a>);
 
   draw_color_panel();
   draw_shape_panel();
 
   setviewport(1,1,maxx-1,maxy-1,1);
 
   restrictmouseptr(1,1,maxx-1,maxy-1);
   showmouseptr();
   rectangle(2,2,518,427);
   setviewport(1,1,519,428,1);
 
   while(1)
   {
      if(kbhit())
      {
         key = get_key();
 
         if( key == 1 )
         {
            closegraph();
            exit(0);
         }
      }
 
      getmousepos(&button,&x,&y);
 
      if( button == 1 )
      {
         if( x > 4 && x < 635 && y > 431 && y < 457 )
            change_color( x, y );
         else if ( x > 529 && x < 625 && y > 40 && y < 250 )
             ch = change_shape( x, y );
 
         temp1 = x ;
         temp2 = y ;
 
         if ( ch == 'f' )
         {
            hidemouseptr();
            while( button == 1 )
            {
               line(temp1,temp2,x,y);
               temp1 = x;
               temp2 = y;
               getmousepos(&button,&x,&y);
            }
            showmouseptr();
         }
 
         while( button == 1)
            getmousepos(&button,&x,&y);
 
         /* to avoid interference of mouse while drawing */
         hidemouseptr();
 
         if( ch == 'p')
            putpixel(x,y,getcolor());
 
         else if ( ch == 'b' )
         {
            setfillstyle(SOLID_FILL,getcolor());
            bar(temp1,temp2,x,y);
         }
         else if ( ch == 'l')
            line(temp1,temp2,x,y);
         else if ( ch == 'e')
            ellipse(temp1,temp2,0,360,abs(x-temp1),abs(y-temp2));
         else if ( ch == 'r' )
            rectangle(temp1,temp2,x,y);
         else if ( ch == 'c' )
         {
            ch = 'f';          // setting to freehand drawing
            clearviewport();
            color = getcolor();
            setcolor(WHITE);
            rectangle(2,2,518,427);
            setcolor(color);
         }
 
         showmouseptr();
      }
   }
}

C Program to perform countdown of 30 SEC using C graphics.h

This c graphics program performs countdown for 30 seconds.

C program countdown code

#include <graphics.h>
#include <dos.h>
#include <conio.h>
 
int main()
{
   int gd = DETECT, gm, i;
   char a[5];
 
   initgraph( &gd, &gm, "C:\\TC\\BGI");
 
   settextjustify( CENTER_TEXT, CENTER_TEXT );
   settextstyle(DEFAULT_FONT,HORIZ_DIR,3);
   setcolor(RED);
 
   for (i = 30; i >=0; i--)
   {
      sprintf(a,"%d",i);
      outtextxy(getmaxx()/2, getmaxy()/2, a);
      delay(1000);
 
      if ( i == 0 )
         break;
      cleardevice();
   }
 
   getch();
   closegraph();
   return 0;
}

C program to draw CIRCLES i CIRCLE using C graphics.h

This program draws circles in circles in two different colors.

C programming code

#include<graphics.h>
#include<conio.h>
#include<dos.h>
 
main()
{
   int gd = DETECT, gm, x, y, color, angle = 0;
   struct arccoordstype a, b;
 
   initgraph(&gd, &gm, "C:\\TC\\BGI");
   delay(2000);
 
   while(angle<=360)
   {
      setcolor(BLACK);
      arc(getmaxx()/2,getmaxy()/2,angle,angle+2,100);
      setcolor(RED);
      getarccoords(&a);
      circle(a.xstart,a.ystart,25);
      setcolor(BLACK);
      arc(getmaxx()/2,getmaxy()/2,angle,angle+2,150);
      getarccoords(&a);
      setcolor(GREEN);
      circle(a.xstart,a.ystart,25);
      angle = angle+5;
      delay(50);
   }
 
   getch();
   closegraph();
   return 0;
}

C program to generate CAPTCHA using C graphics.h

This program generates captcha, a captcha is a random code generated using some algorithm. We will use random function in our code. These are used in typing tutors and in website to check whether a human is operating on a website.

C programming code

#include<stdlib.h>
#include<dos.h>
#include<graphics.h>
 
main()
{
   int i = 0, key, num, midx, gd = DETECT, gm;
   char a[10];
 
   initgraph(&gd,&gm,"C:\\TC\\BGI");
 
   midx = getmaxx()/2;
 
   settextstyle(SCRIPT_FONT,HORIZ_DIR,5);
   settextjustify(CENTER_TEXT,CENTER_TEXT);
   setcolor(GREEN);
   outtextxy(midx,20,"CAPTCHA");
   settextstyle(SCRIPT_FONT,HORIZ_DIR,2);
   outtextxy(midx,125,"Press any key to change the generated random code \"captcha\"");
   outtextxy(midx,150,"Press escape key to exit...");
 
   setcolor(WHITE);
   setviewport(100,200,600,400,1);
   setcolor(RED);
   randomize();
 
   while(1)
   {
      while(i<6)
      {
         num = random(3);
 
         if ( num == 0 )
            a[i] = 65 + random(26);     /* 65 is the ASCII value of A */
         else if ( num == 1)
            a[i] = 97 + random(26);     /* 97 is the ASCII value of a */
         else
            a[i] = 48 + random(10);     /* 48 is the ASCII value of 0 */
         i++;
      }
      a[i] = '\0';
      outtextxy(210,100,a);
      key = getch();
 
      if( key == 27 )                     /* escape key*/
         exit(0);
      clearviewport();
      i = 0;
   }
}

C Program for SMILING FACE ANIMATION using C graphics.h

This animation using c draws a smiling face which appears at random position on screen. See output below the code, it will help you in understanding the code easily.

C programming code

#include<graphics.h>
#include<conio.h>
#include<stdlib.h>
 
main()
{
   int gd = DETECT, gm, area, temp1, temp2, left = 25, top = 75;
   void *p;
 
   initgraph(&gd,&gm,"C:\\TC\\BGI");
 
   setcolor(YELLOW);
   circle(50,100,25);
   setfillstyle(SOLID_FILL,YELLOW);
   floodfill(50,100,YELLOW);
 
   setcolor(BLACK);
   setfillstyle(SOLID_FILL,BLACK);
   fillellipse(44,85,2,6);
   fillellipse(56,85,2,6);
 
   ellipse(50,100,205,335,20,9);
   ellipse(50,100,205,335,20,10);
   ellipse(50,100,205,335,20,11);
 
   area = imagesize(left, top, left + 50, top + 50);
   p = malloc(area);
 
   setcolor(WHITE);
   settextstyle(SANS_SERIF_FONT,HORIZ_DIR,2);
   outtextxy(155,451,"Smiling Face Animation");
 
   setcolor(BLUE);
   rectangle(0,0,639,449);
 
   while(!kbhit())
   {
      temp1 = 1 + random ( 588 );
      temp2 = 1 + random ( 380 );
 
      getimage(left, top, left + 50, top + 50, p);
      putimage(left, top, p, XOR_PUT);
      putimage(temp1 , temp2, p, XOR_PUT);
      delay(100);
      left = temp1;
      top = temp2;
   }
 
   getch();
   closegraph();
   return 0;
}