杭电hdu 1332 LC-Display 简单题

http://acm.hdu.edu.cn/showproblem.php?pid=1332

模拟，需要注意的地方:每组数据后有一个空行，每两个数字之间有一个空格。

#include <stdio.h>

int n, s;

void print(char *str, int len)
{
	int i, j, k;
	//head
	for(i = len-1; i >= 0; i --){
		switch(str[i]){
		case '0':
		case '2':
		case '3':
		case '5':
		case '6':
		case '7':
		case '8':
		case '9':
			printf(" ");
			for(j = 0; j < s; j ++){
				printf("-");
			}
			printf(" ");
			break;
		case '1':
		case '4':
			for(j = 0; j < s+2; j ++){
				printf(" ");
			}
			break;
		}
		if(i!=0)printf(" ");
	}
	printf("\n");

	//top body
	for(i = 0; i < s; i ++){
		for(j = len-1; j >= 0; j --){
			switch(str[j]){
			case '1':
			case '2':
			case '3':
			case '7':
				for(k = 0; k < s+1; k ++){
					printf(" ");
				}
				printf("|");
				break;
			case '5':
			case '6':
				printf("|");
				for(k = 0; k < s+1; k ++){
					printf(" ");
				}
				break;
			case '0':
			case '4':
			case '8':
			case '9':
				printf("|");
				for(k = 0; k < s; k ++){
					printf(" ");
				}
				printf("|");
				break;
			}//switch
			if(j!=0)printf(" ");
		}//for
		
		printf("\n");
	}//for

	//middle
	for(i = len-1; i >= 0; i --){
		switch(str[i]){
		case '2':
		case '3':
		case '4':
		case '5':
		case '6':
		case '8':
		case '9':
			printf(" ");
			for(j = 0; j < s; j ++){
				printf("-");
			}
			printf(" ");
			break;
		case '0':
		case '1':
		case '7':
			for(j = 0; j < s+2; j ++){
				printf(" ");
			}
			break;
		}
		if(i!=0)printf(" ");
	}
	printf("\n");

	//low body
	for(i = 0; i < s; i ++){
		for(j = len-1; j >= 0; j --){
			switch(str[j]){
			case '1':
			case '3':
			case '4':
			case '5':
			case '7':
			case '9':
				for(k = 0; k < s+1; k ++){
					printf(" ");
				}
				printf("|");
				break;
			case '2':
				printf("|");
				for(k = 0; k < s+1; k ++){
					printf(" ");
				}
				break;
			case '0':
			case '6':
			case '8':
				printf("|");
				for(k = 0; k < s; k ++){
					printf(" ");
				}
				printf("|");
				break;
			}//switch
			if(j!=0)printf(" ");
		}//for
		printf("\n");
	}//for

	//buttom
	for(i = len-1; i >= 0; i --){
		switch(str[i]){
		case '0':
		case '2':
		case '3':
		case '5':
		case '6':
		case '8':
		case '9':
			printf(" ");
			for(j = 0; j < s; j ++){
				printf("-");
			}
			printf(" ");
			break;
		case '1':
		case '4':
		case '7':
			for(j = 0; j < s+2; j ++){
				printf(" ");
			}
			break;
		}
		if(i!=0)printf(" ");
	}
	printf("\n\n");
}

int main()
{
//	freopen("input.txt","r",stdin);
//	freopen("output.txt","w+",stdout);
	char str[9];
	int len;
	while(scanf("%d%d", &s, &n)){
		if(n==0&&s==0)break;
		len = 0;
		if(n == 0)
			str[len++] = 0+'0';
		else{
			while(n!=0){
				str[len ++] = n%10 + '0';
				n /= 10;
			}
		}
		print(str, len);
	}
	return 0;
}