Merry Christmas – Program for Christmas Tree in C
Merry Christmas – Program for Christmas Tree in C
To print a Christmas tree, we are printing pyramids of various sizes just one beneath the other.
For the decoration, a random character is printed at each position.
Height and randomness can be adjusted. This is been repeated frame after frame to give the illusion of a true event.
// C program to print a Christmas tree
// It is recommended is try it with a desktop
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <unistd.h>
#define RefRate 40000
#define randomness 5 // high means less random
// Clear the shell
void clrscr()
{
system(“@cls||clear”);
}
// Print a random character giving preference
// to *
void printRandLeaf()
{
char leaftypes[5] = { ‘.’, ‘*’, ‘+’, ‘o’, ‘O’ };
int temp = rand() % randomness;
// Giving preference to *
if (temp == 1)
printf(“%c “, leaftypes[rand() % 5]);
else
printf(“%c “, leaftypes[1]);
}
void triangle(int f, int n, int toth)
{
int i, j, k = 2 * toth – 2;
for (i = 0; i < f – 1; i++)
k–;
// number of rows
for (i = f – 1; i < n; i++) {
// space handler
for (j = 0; j < k; j++)
printf(” “);
// decrementing k after each loop
k = k – 1;
// number of columns, printing stars
for (j = 0; j <= i; j++)
printRandLeaf();
printf(“\n”);
}
}
// Prints multiple triangles
void printTree(int h)
{
int start = 1, stop = 0, diff = 3;
while (stop < h + 1) {
stop = start + diff;
triangle(start, stop, h);
diff++;
start = stop – 2;
}
}
// Prints bottom part.
void printLog(int n)
{
int i, j, k = 2 * n – 4;
for (i = 1; i <= 6; i++) {
// space handler
for (j = 0; j < k; j++)
printf(” “);
for (j = 1; j <= 6; j++)
printf(“#”);
printf(“\n”);
}
}
// Driver code
int main()
{
srand(time(NULL));
int ht = 6;
printf(“\n*********MERRY CHRISTMAS*********\n\n”);
// refresh loop
while (1) {
clrscr();
printTree(ht);
printLog(ht);
usleep(RefRate);
}
return 0;
}
