Program function
To implement a simple cellular automata, you can customize the initial state and running rules. On this basis, a program which can automatically draw a large number of kaleidoscope images is realized.
Note: in order to prevent the screen from flickering when two-dimensional array is output, double screen buffer is used to display in turn. After writing the buffer, one-time output can prevent the picture flickering caused by the array cyclic output mode.
Effect
"gliders" in life games:
Kaleidoscope:

Code

#include <windows.h>
#include <stdlib.h>
#include <conio.h>
#include <string>
#include <time.h>
#include <math.h>
#include <iostream>
#define BLACK 0
#define WHITE 15
#define GREEN 10
#define YELLOW 14
#define RED 12
#define BLUE 9
#define CYAN 11
#define PURPLE 13
#define INCI(x) (((x)+1)%(COL))
#define DECI(x) (((x)+COL-1)%(COL))
#define INCJ(x) (((x)+1)%(RAW))
#define DECJ(x) (((x)+RAW-1)%(RAW))
#define MODE "mode 82,42"
#define COL 41
#define RAW 41
using namespace std;
int ct=0;
HANDLE hOutput, hOutBuf;//Console screen buffer handle
COORD coord={0,0};
WORD att;
DWORD bytes=0;
char data[COL][RAW];
int clr[8]={BLACK,WHITE,GREEN,YELLOW,RED,BLUE,CYAN,PURPLE};
int a[COL][RAW]={0},b[COL][RAW]={0};
unsigned int counts=0;
char str[11];
void f0()
{
	int i,j,k;
	memset(b,0,sizeof(b));
	for(i=0;i<COL;i++)
		for(j=0;j<RAW;j++)
		{
			k=a[i][j];
			b[(i+rand()%3-1)%COL][(j+rand()%3-1)%RAW]+=k;
			b[(i+rand()%3-1)%COL][(j+rand()%3-1)%RAW]+=k;
		}
	for(i=0;i<COL;i++)
		for(j=0;j<RAW;j++)
		{
			a[i][j]=b[i][j]%8;
		}
}
void f1()
{
	int i,j,k;
	memset(b,0,sizeof(b));
	for(i=0;i<COL;i++)
		for(j=0;j<RAW;j++)
		{
			k=a[i][j];
			//b[i][j]+=k;
			b[DECI(i)][j]+=k;
			b[INCI(i)][j]+=k;
			b[i][DECJ(j)]+=k;
			b[i][INCJ(j)]+=k;
		}
	for(i=0;i<COL;i++)
		for(j=0;j<RAW;j++)
		{
			a[i][j]=b[i][j]%8;
		}
}
void f2p()
{
	a[1][5]=1;
	a[2][5]=1;
	a[1][6]=1;
	a[2][6]=1;
	a[11][5]=1;
	a[11][6]=1;
	a[11][7]=1;
	a[12][4]=1;
	a[12][8]=1;
	a[13][3]=1;
	a[13][9]=1;
	a[14][3]=1;
	a[14][9]=1;
	a[15][6]=1;
	a[16][4]=1;
	a[16][8]=1;
	a[17][5]=1;
	a[17][6]=1;
	a[17][7]=1;
	a[18][6]=1;
	a[21][3]=1;
	a[21][4]=1;
	a[21][5]=1;
	a[22][3]=1;
	a[22][4]=1;
	a[22][5]=1;
	a[23][2]=1;
	a[23][6]=1;
	a[25][1]=1;
	a[25][2]=1;
	a[25][6]=1;
	a[25][7]=1;
	a[35][3]=1;
	a[35][4]=1;
	a[36][3]=1;
	a[36][4]=1;
}
void f2()
{
	int i,j,k;
	memset(b,0,sizeof(b));
	for(i=0;i<COL;i++)
		for(j=0;j<RAW;j++)
		{
			k=0;
			if(a[DECI(i)][j])k++;
			if(a[INCI(i)][j])k++;
			if(a[i][DECJ(j)])k++;
			if(a[i][INCJ(j)])k++;
			if(a[DECI(i)][DECJ(j)])k++;
			if(a[DECI(i)][INCJ(j)])k++;
			if(a[INCI(i)][DECJ(j)])k++;
			if(a[INCI(i)][INCJ(j)])k++;
			if(k==3)b[i][j]=1;
			else if(k==2)b[i][j]=a[i][j];
			else b[i][j]=0;
		}
	for(i=0;i<COL;i++)
		for(j=0;j<RAW;j++)
		{
			a[i][j]=b[i][j];
		}
}
void show()
{
    int i,j;
    for(i=0;i<COL;i++)
    {
        for(j=0;j<RAW;j++)
        {
        	coord.X=2*i;
			coord.Y=j;
			att=clr[a[i][j]];
            if(a[i][j])
			{
				WriteConsoleOutputCharacterA(hOutBuf,"■",2,coord,&bytes);
			}
			else WriteConsoleOutputCharacterA(hOutBuf,"  ",2,coord,&bytes);
        	WriteConsoleOutputAttribute(hOutBuf,&att,1,coord,&bytes);
        	coord.X++;
			WriteConsoleOutputAttribute(hOutBuf,&att,1,coord,&bytes);
		}
    }
    itoa(counts,str,10);
    coord.X=0;coord.Y=41;
    WriteConsoleOutputCharacterA(hOutBuf,str,sizeof(str),coord,&bytes);
    att=WHITE;
    WriteConsoleOutputAttribute(hOutBuf,&att,1,coord,&bytes);
    SetConsoleActiveScreenBuffer(hOutBuf);
    f1();
    //Sleep(50);
    getch();counts++;
    for(i=0;i<COL;i++)
    {
        for(j=0;j<RAW;j++)
        {
        	coord.X=2*i;
			coord.Y=j;
			att=clr[a[i][j]];
            if(a[i][j])
			{
				WriteConsoleOutputCharacterA(hOutput,"■",2,coord,&bytes);
			}
			else WriteConsoleOutputCharacterA(hOutput,"  ",2,coord,&bytes);
        	WriteConsoleOutputAttribute(hOutput,&att,1,coord,&bytes);
        	coord.X++;
			WriteConsoleOutputAttribute(hOutput,&att,1,coord,&bytes);
		}
    }
    itoa(counts,str,10);
    coord.X=0;coord.Y=41;
    WriteConsoleOutputCharacterA(hOutput,str,sizeof(str),coord,&bytes);
    att=WHITE;
    WriteConsoleOutputAttribute(hOutput,&att,1,coord,&bytes);
    SetConsoleActiveScreenBuffer(hOutput);
    f1();
    //Sleep(50);
    getch();counts++;
}
int main()
{
	srand(time(NULL));
	system(MODE);
    hOutBuf = CreateConsoleScreenBuffer(
        GENERIC_WRITE,
        FILE_SHARE_WRITE,
        NULL,
        CONSOLE_TEXTMODE_BUFFER,
        NULL
    );
    hOutput = CreateConsoleScreenBuffer(
        GENERIC_WRITE,
        FILE_SHARE_WRITE,
        NULL,
        CONSOLE_TEXTMODE_BUFFER,
        NULL
    );
    CONSOLE_CURSOR_INFO cci;
    cci.bVisible = 0;
    cci.dwSize = 1;
    SetConsoleCursorInfo(hOutput, &cci);
    SetConsoleCursorInfo(hOutBuf, &cci);
    a[COL/2][RAW/2]=1;
    //a[rand()%COL][rand()%RAW]=1;
	//f2p();
    while(1)show();
}

picture
Some are better looking: