数字放大器:

#include<iostream>
#include<cmath>
#include<vector>
#include<queue>
#include<stack>
#include<cstring>
#include<string>
#include<cstdio>
#include<algorithm>
#include<windows.h>
#define int long long//define int long long,你值得拥有！
#define I register int//#define I register int,你值得拥有！
#define maxn 1000000
#define maxm 1000
using namespace std;
int gcd(int a,int b)
{
	if(a%b==0) return b;
	else return gcd(b,a%b);
}
string a[]={" ■■■  ","■  "," ■■■  ","■■■■  ","■  ■  ","■■■■■ "," ■■■  ","■■■■■ "," ■■■  "," ■■■  "};
string b[]={"■   ■ ","■  ","    ■ ","    ■ ","■  ■  ","■     ","■     ","    ■ ","■   ■ ","■   ■ "};
string c[]={"■   ■ ","■  "," ■■■  "," ■■■  ","■■■■■ ","■■■■■ "," ■■■  ","   ■  "," ■■■  "," ■■■■ "};
string d[]={"■   ■ ","■  ","■     ","    ■ ","   ■  ","    ■ ","■   ■ ","  ■   ","■   ■ ","    ■ "};
string e[]={" ■■■  ","■  "," ■■■  ","■■■■  ","   ■  ","■■■■■ "," ■■■  ","  ■   "," ■■■  ","   ■  "};
int lcm(int a,int b){return a*b/gcd(a,b);}
signed main()
{
	for(int i=1;i<=50;i++)
	{
		printf("loading......\n");
	for(int i=1;i<=50;i++) printf("_");
	cout<<endl;
		for(int k=1;k<=5;k++)
		{
			for(int j=1;j<=i;j++)
			{
				printf("■");
			}
			printf("\n");
		}
		for(int i=1;i<=50;i++) printf("_");
		Sleep(100);
		system("cls");
	}
	cout<<"OK!";
	Sleep(500);
	system("cls");
	while(1)
	{
		cout<<"The num which need to bigger:";
		string s;cin>>s;
		vector<int> wei;
		for(int i:s) wei.push_back(i-'0');
		int size=wei.size(),zhang=0;
		while(size)
		{
			for(int i=0;i<min(size,21ll);i++) cout<<a[wei[zhang+i]];
			cout<<endl;
			for(int i=0;i<min(size,21ll);i++) cout<<b[wei[zhang+i]];
			cout<<endl;
			for(int i=0;i<min(size,21ll);i++) cout<<c[wei[zhang+i]];
			cout<<endl;
			for(int i=0;i<min(size,21ll);i++) cout<<d[wei[zhang+i]];
			cout<<endl;
			for(int i=0;i<min(size,21ll);i++) cout<<e[wei[zhang+i]];
			cout<<"\n\n";
			size-=20;
			zhang+=21;
			if(size<=0) break;
		}
		cout<<"--------------------------------\nProcess exited after [unkown_num] seconds with return value 0\n请按任意键继续. . .(真的,不是退出!)";
		getchar();getchar();
		system("cls");
	}
}