IT PROFESSIONALS

FOR DFD FOUR BASIC NOTATIONS ARE: 1.LABELLED ARROW.----> 2.SOURCES OR SINK OF INFORMATION(EXTERNAL ENTITY): REPRESENTED BY SQUARE. 3.PROCESS ARE REPRESENTED BY CIRCLE AND ROUND SHAPE AS SHOWN ENROLL STUDENT I N THE GIVEN DFD. 4.DATA STORE REPRESENTED BY TWO PARALLEL LINES OR BY SHAPE FOR STUDENT MASTER FILE IN THE GIVEN DFD..

/* HEY AT LEAST APPRECIATE MY WORK DUDE */ #include<stdio.h> #include<conio.h> #include<graphics.h> void main() {  int gd=DETECT,gm;  initgraph(&gd,&gm,"c\\tc\bin");  setcolor(1);  circle(320,240,100);  setcolor(6);  circle(280,215,20);  setcolor(3);  circle(280,215,5);  setcolor(1);  circle(360,215,20);  setcolor(3);  circle(360,215,5);  setcolor(1);  line(300,270,340,270);  line(300,270,320,240);  line(340,270,320,240);  getch();  closegraph();  }

#include<stdio.h> #include<conio.h> #include<graphics.h>  #include<dos.h> void main() {  int gd=DETECT,gm,x,y,i;  initgraph(&gd,&gm,"c\\tc\bin");  x=getmaxx()/2;  y=getmaxy()/2;  for(i=30;i<200;i++)  {  delay(100);  setcolor(i/10);  arc(x,y,0,180,i-10);  }  getch();  closegraph() ;  }

#include<stdio.h> #include<conio.h> #include<graphics.h> void main() {  int gm,gd; gd=DETECT; initgraph(&gd,&gm,""); int x,y,r; printf("enter the positions of x and y"); scanf("%d%d",&x,&y); printf("enter the radius"); scanf("%d",&r); circle(x,y,r); getch(); }

#include<stdio.h> #include<conio.h> #include<dos.h> #include<math.h> #include<graphics.h> void main() { int gd=DETECT,gm,erroecode; float i; float x=250,y=200; float a=10,b=15,r=0; initgraph(&gd,&gm,"c:\\tc\bgi"); while(!kbhit()) { for(i=0;i<100;i=i+0.01) { setcolor(7); r=(a*i)*sin(3*i) ; x=200+r*cos(i); y=200+r*sin(i); circle(x,y,0); delay(100); setcolor(4); } } getch(); }

#include <GRAPHICS.H> #include <stdio.h> #include<math.h> #include<conio.h> #include<dos.h> void main() { clrscr(); int gd=DETECT,gm; float xc=20,yc=40,x,y,l,r,a,i,rad; initgraph(&gd,&gm,"f:\\TC\\bin\\BGI"); printf("\nEnter the length\n"); scanf("%f",&l); printf("\nEnter radius\n"); scanf("%f",&r); printf("\nEnter angle\n"); scanf("%f",&a); a=a/2; while(!kbhit) { for(i=-a;i<=a;i++) { rad=(3.14*i)/180; x=xc+(l*sin(rad)); y=yc+(l*cos(rad)); line(xc,yc,x,y); circle(x,y,r); setfillstyle(SOLID_FILL,10); floodfill(x,y,10); delay(10); cleardevice(); } for(i=a;i>=-a;i--) { rad=(3.14*i)/180; x=xc+(l*sin(rad)); y=yc+(l*cos(rad)); line(xc,yc,x,y); circle(x,y,r); setfillstyle(SOLID_FILL,10); floodfill(x,y,10); delay(10);       cleardevice(); } } getch(); }

/* MIDPOINT CIRCLE DRAWING* / #include<stdio.h> #include<graphics.h> #include<math.h> #include<dos.h> #include<conio.h> void main() { char pattern[8] = {0x00, 0x70, 0x20, 0x27, 0x25, 0x27, 0x04, 0x04}; float p; int i,gd,gm,x,y; int r; detectgraph(&gd,&gm); initgraph(&gd,&gm,"f:\\tc\\bin\\bgi"); printf("enter  the radius of the circle"); scanf("%d",&r); x=0; y=r; p=(3)-r; //setbkcolor(7) ;     line(0, 0, 30, 10); setcbrk(5); do { for(i=0;i<5;i++) { putpixel(200+x,200+y,10); putpixel(200+y,200+x,5); putpixel(200+x,200-y,8); putpixel(200+y,200-x,5); putpixel(200-x,200-y,9); putpixel(200-x,200+y,5); putpixel(200-y,200+x,1); putpixel(200-y,200-x,5);  setfillpattern(pattern,getmaxcolor()); if(p<0) { x=x+1; y=y; p=p+2*x+2; } else { x=x+1; y=y-1; p=p+2*(x-y)+1 ; } delay(100); } } while(x<y); getch(); closegraph(); }

 /* BRESENHAM LINE DRAWING */ #include<stdlib.h> #include<graphics.h> #include<stdio.h> #include<conio.h> #include<alloc.h> #include<math.h> #include<dos.h> void   main() {clrscr(); float i,e,x,y,x1,y1,x2,y2,dx,dy,length; printf("enter the value of x1:\t"); scanf("%f",&x1);  printf("enter the value of y1:\t"); scanf("%f",&y1); printf("enter the value of x2:\t"); scanf("%f",&x2); printf("enter the value of y2:\t"); scanf("%f",&y2); int gdrives=DETECT,gmode; initgraph(&gdrives,&gmode,"f:\\tc\\bin\\bgi"); dx=abs(x2-x1); dy=abs(y2-y1); x=x1; y=y1; e=2*dy-dx; i=1; do { putpixel(x,y,15); while(e>=0) { y=y+1; e=e-2*dx; } delay(100); x=x+1; e=e+2*dy; i=i+1; } while(i<=dx); getch(); closegraph(); }