Birthday gift (to be modified)

Turbo C 2.0 is an excellent C language programming tool in the DOS era, but the majority of users are currently using Windows operating systems. If you want to call a graphic animation program written in C language in windows. there may be many errors that cannot be displayed in graphic animation. This is because the image processing function of C cannot be accurately located on the Windows interface. Therefore, when using the initgraph () function in Turbo C for graph initialization, you must complete the following steps: (assume that Turbo C 2.0 is installed in the C:/TC directory)

① Enter the command in the C:/TC subdirectory:

Bgiobj egavga. BGI

This command converts the driver egavga. BGI to the target file of egavga. obj.
Because the corresponding driver (*. BGI) is not loaded into the execution program at compilation and linking time.

② Add the OBJ file created above to the graphics. Lib library file. The specific method is as follows.
Run the following command in the C:/TC subdirectory:

Tlib C:/TC/lib/graphics. Lib + egavga

 

/* Birthday gift */

 

# Include <stdio. h>
# Include <stdlib. h>
# Include <math. h>
# Include <graphics. h>
# Define PI 3.1415926

Void Star (int x, int y)/* star function */
{
Int I,;
Int n = 5;
Int X1 [5], Y1 [5], X2 [5], Y2 [5];
Setcolor (yellow );
For (I = 0; I <5; I ++)
{
X1 [I] = x + N * Cos (I * 72 * PI/180 );
Y1 [I] = Y + N * sin (I * 72 * PI/180 );
X2 [I] = x + n/2 * Cos (I * 72 * PI/180 + PI/5 );
Y2 [I] = Y + n/2 * sin (I * 72 * PI/180 + PI/5 );
}
For (I = 0; I <5; I ++)
{
A = I + 1;
If (A> 4) A = 0;
Line (x1 [I], Y1 [I], X2 [I], Y2 [I]);/* draw a straight line between two points */
Line (X2 [I], Y2 [I], X1 [a], Y1 [a]);
}
}

Void putstar ()/* function for painting stars */
{
Integer seed = 1858;
Int I, dotx, doty, H, W, color, maxcolor;
Maxcolor = getmaxcolor ();
W = getmaxx ();
H = getmaxy ();
Srand (SEED );
For (I = 0; I <100; I ++)
{
Dotx = I + random (W-1 );
Doty = I + random (h-1 );
Color = random (maxcolor );
Setcolor (color );
Putpixel (dotx, doty, color );
Circle (dotx + 1, doty + 1, 1 );
}
Srand (SEED );
}

Void drawstar ()/* put stars and stars in the sky */
{
Int A [] = {70,280,230,440,140,110,180, 90,500,360 };
Int B [] = {50, 27, 88, 99,100, 37, 67, 98,60, 78 };
Int I;
Setfillstyle (1, 14 );
For (I = 0; I <10; I ++)
{
Star (A [I], B [I]);
Floodfill (A [I], B [I], yellow );
}
Putstar ();
}

Void startflower ()/* function of fireworks */
{
Int I = 0, J;
Int n = 60, n1 = 2;
Int x = 200, y = 200, size = 100;
Int cover = 0;
Int delay1 = 5000;
Int WID, Hei;
Int PX, Py;
Int color = 9;
While (! Kbhit ())
{
If (I <size)
{
For (j = 0; j <n; j ++)
{
Px = x + I * Cos (J * 360/N * PI/180 );
Py = Y + I * sin (J * 360/N * PI/180 );
Putpixel (PX, Py, Rand () % 16 );
Putpixel (PX-1, Py, color );
Putpixel (PX, Py + 1, color );
Putpixel (PX + 1, Py-1, yellow );
Putpixel (PX, Py-1, yellow );
Putpixel (PX + 1, Py, red );
Putpixel (PX + 1, Py + 1, red );
}
}

If (I> size & cover <size)
{
Setcolor (black );
Circle (X, Y, cover ++ );
Delay1 = 1000;
}

If (cover = size)
{
I = 0;
X = 50 + rand () % 550;
Y = rand () % 400;
Cover = 0;
Color = rand () % 16;
Size = 50 + rand () % 250;
Delay1 = 10000;
Clearviewport ();
Drawstar ();

}

I + = N1;
Delay (delay1 );
}
}

Void main ()
{
Int I, J, K;
Int gdriver = detect, gmode;
Registerbgidriver (egavga_driver );
Initgraph (& gdriver, & gmode ,"");
Drawstar ();

Startflower ();
}