Show the ticking Clock using Graphics

Write a C Program to Show the ticking Clock using Graphics. Here’s simple Program to Show the ticking Clock using Graphics in C Programming Language.

Below is the source code for C Program to Show the ticking Clock using Graphics which is successfully compiled and run on Windows System to produce desired output as shown below :

SOURCE CODE : :

/*  C Program to Show the ticking Clock using Graphics  */

#include<graphics.h>
#include<stdio.h>
#include<conio.h>
#include<math.h>
#include<dos.h>
// Calculates new co-ordinates of a figure after 
// rotating it at an angle about a point (cx,cy)
void rotate( int figure[], int edges, double angle, int cx, int cy ) {
        double x, y;
        angle = -1 * (angle*3.14/180);
        double cos_a = cos(angle);
        double sin_a = sin(angle);
        for (int i=0; i < edges; i++) {
                x = figure[2*i] - cx;
                y = figure[2*i+1] - cy;
                figure[2*i] = floor( (x * cos_a) - (y * sin_a) + cx + 0.5 );
                figure[2*i+1] = floor( (x * sin_a)+(y * cos_a) + cy + 0.5 );
        }
}
void drawClock(int,int,int);
void main() {
        int second_hand[4],minute_hand[4], hour_hand[4], edges = 2 ;
        double angle;
        int cx=300, cy=200;
        int gd = DETECT, gm;
        initgraph( &gd, &gm, "" );
        int max_y = getmaxy();
        clrscr();
        cleardevice();
        angle = -6;
        // Set the initial position of the second, minute and the hour hands.
        second_hand[0] = cx ;
        second_hand[1] = max_y - cy;
        second_hand[2] = cx;
        second_hand[3] = max_y - 320;
        hour_hand[0] = cx;
        hour_hand[1] = max_y - cy;
        hour_hand[2] = cx + 90;
        hour_hand[3] = max_y - 200;
        minute_hand[0] = cx;
        minute_hand[1] = max_y - cy;
        minute_hand[2] = cx;
        minute_hand[3] = max_y - 310;
        cleardevice();
        setbkcolor(WHITE);
        // Draw the clock
        drawClock(cx,max_y - cy,150);
        setlinestyle(SOLID_FILL,0,1);
        // Draw the minute and the hour hand
        drawpoly(2,minute_hand);
        drawpoly(2,hour_hand);
        int i=0;
        while(!kbhit()) {
                setcolor(RED);
                drawpoly(2,second_hand);
                setcolor(GREEN);
                drawpoly(2,minute_hand);
                setcolor(BLUE);
                drawpoly(2,hour_hand);
                delay(1000);
                // set delay(10) to tick the clock fast
                setcolor(15);
                drawpoly(2,second_hand);
                rotate(second_hand,edges,angle,cx,max_y - cy);
                i++;
                // Reset the second hand and move the minute hand 
                // when the second hand has moved 60 times.
                if(i%60 == 0) {
                        second_hand[0] = cx ;
                        second_hand[1] = max_y - cy;
                        second_hand[2] = cx;
                        second_hand[3] = max_y - 320;
                        drawpoly(2,minute_hand);
                        rotate(minute_hand,edges,angle,cx,max_y - cy);
                }
                // Move the minute hand 
                // when the second hand has moved 720 (60*12) times.
                if(i%720 == 0) {
                        i = 0;
                        drawpoly(2,hour_hand);
                        rotate(hour_hand,edges,angle,cx,max_y - cy);
                }
        }
        getch();
}
// Function to draw the clock 
void drawClock(int cx, int cy, int r) {
        setcolor(GREEN);
        setlinestyle(SOLID_FILL,0,3);
        circle(cx,cy,r);
        int max_y = getmaxy();
        int center[2] = {
                cx, max_y - 340
        }
        ;
        for (int i=0; i<60; i++) {
                if(i%5 == 0) {
                        circle(center[0],center[1],2);
                } else {
                        circle(center[0],center[1],1);
                }
                rotate(center,1,-6,cx,cy);
        }
}

Above is the source code for C Program to Show the ticking Clock using Graphics which is successfully compiled and run on Windows System.The Output of the program is shown above .

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