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Displaying  Source Code(s)

 A Simple 2D-Drawing Program -------------------------------------------------------------------------------- Description : This is an Simple 2d drawing program in C. It provides some basic functions for graphics in DOS and is a fun to use. #include #include #include #define ESC 0x1b void drcir(int,int,int); void drarc(int,int,int); void main() { int a,b,c,d,e,f,curcolor=3; int gdriver = DETECT,gmode; initgraph(&gdriver,&gmode,"c:\tc\bgi"); verybegin: sound(333); delay(100); sound(222); delay(100); sound(250); delay(100); sound(33); delay(100); sound(111); delay(100); sound(222); delay(100); sound(333); delay(100); sound(3333); delay(100); nosound(); gotoxy(25,1); printf("2d Drawing"); gotoxy(18,5); printf("A Simple Program"); gotoxy(18,6); printf("This is used for drawing circles,arcs,rectangle,"); gotoxy(18,7); printf("lines and many more..."); printf(" The Controls For The Two-Dimensional Drawing
); printf(" N(Up Arrow) = North
); printf(" S(Down Arrow) = South
); printf(" E(Right Arrow) = East
); printf(" W(Left Arrow) = West
); printf(" F(Page Up) = North-East
); printf(" X(Home) = North-West
); printf(" D(Page Down) = South-East
); printf(" Z(End) = South-West
); printf(" J = Current Position
); printf(" B = Help(This Screen)
); printf(" R(Insert) = Reset
); printf(" T = Color Change(0-9)
); printf(" C = Circle
); printf(" A = Arc
); printf(" ESC = Quit
); getch(); begin: curcolor=3; a = getmaxx() / 2; b = getmaxy() / 2; cleardevice(); start: putpixel(a,b,curcolor); c=getch(); sound(100); delay(20); nosound(); if(c==ESC) { goto end; } switch(c) { case 'N': case 'n': case 'H': case 'h': c=a; d=b-1; a=c; b=d; goto start; case 'S': case 's': case 'P': case 'p': c=a; d=b+1; a=c; b=d; goto start; case 'E': case 'e': case 'M': case 'm': c=a+1; d=b; a=c; b=d; goto start; case 'W': case 'w': case 'K': case 'k': c=a-1; d=b; a=c; b=d; goto start; case 'D': case 'd': case 'Q': case 'q': c=a+1; d=b+1; a=c; b=d; goto start; case 'X': case 'x': case 'G': case 'g': c=a-1; d=b-1; a=c; b=d; goto start; case 'Z': case 'z': case 'O': case 'o': c=a-1; d=b+1; a=c; b=d; goto start; case 'F': case 'f': case 'I': case 'i': c=a+1; d=b-1; a=c; b=d; goto start; case 'R': case 'r': goto begin; case 'J': case 'j': f=curcolor+1; putpixel(a,b,f); gotoxy(1,2); printf("X=%d,Y=%d",a,b); sound(100); getch(); gotoxy(1,2); printf(" "); nosound(); goto start; case 'C': case 'c': drcir(a,b,curcolor); goto start; case 'A': case 'a': drarc(a,b,curcolor); goto start; case 'T': case 't': gotoxy(1,2); printf("Enter color code:"); e=getche(); curcolor=e; setcolor(curcolor); gotoxy(1,2); printf(" "); goto start; case 'B': case 'b': cleardevice(); goto verybegin; default: goto start; } end: cleardevice(); closegraph(); } void drcir(int x,int y,int ccolor) { int r; gotoxy(1,2); printf("Enter Radius of Circle:"); scanf("%d",&r); gotoxy(1,2); printf(" "); setcolor(ccolor); circle(x,y,r); } void drarc(int x,int y,int ccolor) { int r,sa,ea; gotoxy(1,2); printf("Enter Radius:"); scanf("%d",&r); gotoxy(1,2); printf(" "); gotoxy(1,2); printf("Enter Starting Angle:"); scanf("%d",&sa); gotoxy(1,2); printf(" "); gotoxy(1,2); printf("Enter Ending Angle:"); scanf("%d",&ea); gotoxy(1,2); printf(" "); setcolor(ccolor); arc(x,y,sa,ea,r); }

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