USACO Section 1.2 Name That Number

上午那道被北航改编成了研究生上机题，现在这道被清华改编成了上机题。看来usaco是个好东西~

另外，测试时在结尾多输出了一行字符，居然提交上去也过了，可见后台的JUDGE不是用的linux里的differ函数

/*
 ID:linyvxi1
 TASK:namenum
 LANG:C++
*/
#include <string.h>
#include <stdio.h>
#include <fstream>
char num_map[]={'2','2','2','3','3','3','4','4','4','5','5','5','6','6','6','7','0','7','7','8','8','8','9','9','9','0'};
char num[20];
char dic_name[20];
using namespace std;
bool check()
{
	int i;
	if(strlen(dic_name)!=strlen(num))
		return false;
	for(i=0;i<strlen(dic_name);i++){
		if(num_map[dic_name[i]-'A']!=num[i])
			return false;
	}
	return true;
}
int main()
{
	FILE*	fin=fopen("namenum.in","r");
	FILE*	fout=fopen("namenum.out","w");
	FILE*	dir=fopen("dict.txt","r");

	fscanf(fin,"%s",num);
	int i;
	bool flag=false;
	for(i=0;i<5000;i++){
		fscanf(dir,"%s",dic_name);
		if(check()){
			flag=true;
			fprintf(fout,"%s\n",dic_name);
		}
	}
	if(!flag)
		fprintf(fout,"%s\n","NONE");

}

Here are the test data inputs:

------- test 1 ----
4734
------- test 2 ----
234643
------- test 3 ----
5747867437
------- test 4 ----
223
------- test 5 ----
532
------- test 6 ----
546
------- test 7 ----
53662
------- test 8 ----
5455426
------- test 9 ----
26678268463
------- test 10 ----
463373633623
------- test 11 ----
282742662
------- test 12 ----
463373633623
------- test 13 ----
2336
------- test 14 ----
5264
------- test 15 ----
426