C program to create a pendulum clock using graphics

In this article, it is discussed how to design a Pendulum Clock in the C programming language using Graphics.

Approach:

• Create two rectangles, one inside the other, using the rectangle() function to act as the outer outline of the clock & the other is the inner outline of the clock.
• Color the space between the two rectangles brown using setfillstyle() and floodfill() functions
• Implement a circle inside the inner rectangle using the circle() function
• Color all other parts leaving the circle with dark gray using setfillstyle() and floodfill() functions.
• In the circle, insert all the digits using settextstyle() and outtextxy() functions.
• Calculate the coordinates of the digits.
• Implement the pendulum with two lines by using the line() function & another circle by using the circle() function which will act as the bob.
• Color all of them black using the setfillstyle() and floodfill() functions again.
• Implement hour, minute & second hands by using the line() function.
• Color the objects individually by using the setcolor() function.

Below is the implementation of the above approach:

C

// C program toc draw the pendulum clock
#include <conio.h>
#include <graphics.h>
#include <stdio.h>

// Driver Code
void main()
{
    int gd = DETECT, gm;

    // Initialize of gdriver
    initgraph(&gd, &gm, "C:\\"
                        "turboc3\\bgi");

    // Clock Outer Outline
    rectangle(500, 50, 800, 650);

    // Clock Inner Outline
    rectangle(520, 70, 780, 630);

    // Coloring Middle Part Of
    // Rectangle With Brown
    setfillstyle(SOLID_FILL, BROWN);
    floodfill(505, 55, 15);

    // Clock Outline
    circle(650, 200, 130);
    circle(650, 200, 3);

    // Coloring all the parts Of the
    // clock except the circle with
    // Darkgray
    setfillstyle(SOLID_FILL, DARKGRAY);
    floodfill(525, 355, 15);
    floodfill(522, 72, 15);
    floodfill(768, 72, 15);

    // Inserting Digits
    settextstyle(6, 0, 3);
    outtextxy(697, 100, "01");
    outtextxy(730, 140, "02");
    outtextxy(742, 190, "03");
    outtextxy(721, 240, "04");
    outtextxy(690, 280, "05");
    outtextxy(630, 300, "06");
    outtextxy(578, 280, "07");
    outtextxy(540, 240, "08");
    outtextxy(530, 190, "09");
    outtextxy(537, 140, "10");
    outtextxy(569, 100, "11");
    outtextxy(630, 80, "12");

    // Left Line Of Pendulum
    line(645, 328, 645, 528);

    // Right Line Of Pendulum
    line(655, 328, 655, 528);

    // Pendulum Bob
    circle(650, 546, 20);

    // Coloring Line & Bob With Black
    setfillstyle(SOLID_FILL, BLACK);
    floodfill(652, 544, 15);
    floodfill(647, 330, 15);

    // Creating the Hour Hand
    // & Color Blue
    setcolor(BLUE);
    line(647, 197, 600, 170);

    // Creating Minute Hand
    // & Color Yellow
    setcolor(YELLOW);
    line(653, 200, 730, 170);

    // Creating Second Hand and the
    // Color Red
    setcolor(RED);
    line(650, 203, 630, 290);

    // Hold the screen for a while
    getch();

    // Close the initialized gdriver
    closegraph();
}

Output: