CLOCK TO DISPLAY SYSTEM TIME

C program code to display system time as clock

The following is a source code to display the system time. If you are interested in this program, then it is easy to produce its executable file. You simply copy this code and save it on your computer with extension '.c'.For example the file name as 'clock.c'. After this you open this file in 'turboc' and run it. surely you will get the result.

The code:

/*********** vipin programs **********************************

* Program to display a virtual clock and a digital display *

* by vipin.p.nair *

* s1s2 ec cek *

* vipinpn@gmail.com *

* 31-3-07 *

*************************************************************/

// including header files

#include"graphics.h"

#include "dos.h"

#include"math.h"

// declaration of functions

void graphics_initialize();

void clockpic();

void needletime();

void clock_refresh();

void about();

void digital_display();

int timesec(char);

// define half of maximam x and y

#define maxx getmaxx()/2

#define maxy getmaxy()/2

// main function

void main()

{

graphics_initialize();

setbkcolor(WHITE);

clockpic();

about();

digital_display();

needletime();

closegraph();

}

//*******************************************************

// definition of functions

// initializing graphics

void graphics_initialize()

{

// auto detection mode

int driver=DETECT,mode=0,errorcode;

// initializing graphics driver

initgraph(&driver,&mode,"c:\\tc\\bgi");

errorcode=graphresult();

if(errorcode!=grOk)

printf("graphics driver not initialized");

}

// drawing picture of clock

void clockpic()

{

setcolor(BROWN);

setfillstyle(7,YELLOW);

fillellipse(maxx,maxy,200,200);

circle(maxx,maxy,200);

circle(maxx,maxy,201);
setcolor(GREEN);

settextstyle(1,0,6);

outtextxy(maxx-20,38,"12");

outtextxy(maxx-11,385,"6");

outtextxy(maxx+160,maxy-28,"3");

outtextxy(135,maxy-28,"9");

outtextxy(460,120,"2");

outtextxy(145,120,"10");

outtextxy(155,300,"8");

outtextxy(400,60,"1");

outtextxy(205,60,"11");

outtextxy(220,360,"7");

outtextxy(395,362,"5");

outtextxy(460,300,"4");

setcolor(LIGHTGRAY);

settextstyle(4,0,4);
outtextxy(290,120,"Clock");

}

// function for defining the motion of needle

void needletime()
{

double x_sec,y_sec,

x_hr,y_hr,

x_min,y_min, prv_sec,

sec=timesec('s'),

min=timesec('m')+sec/60,

//sec*6 degree/360

hr =timesec('h')+min/12;

//min*30 degree/360

while(!kbhit())

{

digital_display();
setcolor(BROWN);
x_sec=maxx+145*cos(1.57-sec*0.017444);

//0.01744 = 3.14/180 (degree to radian)

y_sec=maxy-145*sin(1.57-sec*.017444); // 1.57 Radian = 90 degree
x_min=maxx+110*cos(1.57-min*0.017444);

y_min=maxy-110*sin(1.57-min*.017444);
x_hr=maxx+70*cos(1.57-hr*0.017444);

y_hr=maxy-70*sin(1.57-hr*.017444);
line(319,239,x_hr,y_hr);

line(319,239,x_min,y_min);

line(319,239,x_sec,y_sec);
circle(maxx,maxy,1);

circle(maxx,maxy,2);

circle(maxx,maxy,3);

circle(maxx,maxy,4);

prv_sec=sec;

sec=timesec('s');
if(prv_sec!=sec)

clock_refresh();
min=timesec('m')+sec/60;

hr=timesec('h')+min/12;
}

}
// refreshing a part of clock after each second

void clock_refresh()

{

setcolor(WHITE);

setfillstyle(7,YELLOW);

fillellipse(maxx,maxy,150,150);

settextstyle(1,0,3);

setcolor(BLUE);

outtextxy(maxx-25,100,"Clock");

}

// proving the degree of each needle

int timesec(char tm)

{

int hr;

struct time t;

gettime(&t);

if(tm=='s')

return (t.ti_sec*6);

if(tm=='m') return (t.ti_min*6);

if(tm=='h')

{

hr=t.ti_hour;

if(hr>12)

return (30*(hr-12));

return (30*hr);

} return 0; }

// about programmer

void about()

{

char cnme[]={ 118,105,112,105,110,32 ,112,

114,111,103,114,97 ,109,115,0 },

nme[]= { 66 ,121,32 ,118,105,112,105,110,

46 ,112,46 ,110,97 ,105,114,0 },

sdy[]= { 115,49 ,115,50 ,32 ,67 ,69 ,75 ,44 ,

50 ,48 ,48 ,55 ,0 },

mil[]= { 118,105,112,105,110,112,110,64,103,

109,97 ,105,108,46 ,99 ,111,109,0 };

setcolor(DARKGRAY);

settextstyle(0,1,1);

outtextxy(10,300,cnme);

outtextxy(20,300,nme);

outtextxy(30,300,sdy);

outtextxy(40,300,mil);

}

// providing digital display of clock

void digital_display()

{

int sec=timesec('s')/6,

min=timesec('m')/6,

hr =timesec('h')/30;

char s[3],m[3],h[3];

s[1]=sec%10+48;

// adding 48 to make it the ASCII value, since char

s[0]=sec/10+48;

m[2]=h[2]=s[2]=0;

m[1]=min%10+48;

m[0]=min/10+48;

h[1]=hr%10+48;

h[0]=hr/10+48;
setcolor(RED);

settextstyle(0,0,1);

outtextxy(maxx-40,maxy+50,h);

outtextxy(maxx-25,maxy+50,":");

outtextxy(maxx-15,maxy+50,m);

outtextxy(maxx,maxy+50,":");

outtextxy(maxx+10,maxy+50,s);

}