#include<stdio.h>
#include<string.h>
#include<cstdlib>
#include<windows.h>
#include<ctype.h>
void Search(char *s)
{
freopen("dictionary.txt","r",stdin);
	char a[100],b[100];
	int ok=1;
	while(scanf("%s %s",a,b)!=EOF)
	{
		if(strcmp(s,a)==0)
		{printf("%s %s",a,b);ok=0;break;}
	}
	if(ok)printf("Not Found!");
	putchar('\n');
	freopen("CON","r",stdin); //切换到从控制台输入数据
	freopen("CON","w",stdout); //切换到到控制台输出数据
}
void Add(char *s,char* a)
{
	freopen("dictionary.txt","a+",stdout);
	
	printf("%s %s\n",s,a);
	freopen("CON","r",stdin); 
	freopen("CON","w",stdout);
}
void Change(char* s1,char* s2)
{
	char a[100],b[100];
	char s[1000][50];
	int len,i=0,j;
	memset(s,0,sizeof(a));
	freopen("dictionary.txt","r",stdin);
	while(scanf("%s%s",a,b)!=EOF)
	{
		if(strcmp(s1,a)!=0)
		strcat(s[i],a);
		else if(strcmp(s1,a)==0)
		strcat(s[i],s2);
		
		len=strlen(s[i]);s[i][len]=' ';
		strcat(s[i++],b);
	}
	freopen("dictionary.txt","w",stdout);
	for(j=0;j<i;j++)
	{
		if(j!=i-1)printf("%s\n",s[j]);
		else printf("%s",s[j]);
	}
	freopen("CON","r",stdin); 
	freopen("CON","w",stdout);
}
void Delete(char *s)
{
	char a[300][20],b[100],c[100];int i,ok=0,p=0;
	memset(a,0,sizeof(a));
	freopen("dictionary.txt","r",stdin);
	while(scanf("%s%s",b,c)!=EOF)
	{
		//getchar();
		if(strcmp(b,s)!=0)
		{
			strcat(a[p],b);
			int len=strlen(a[p]);
			a[p][strlen(a[p])]=' ';
			strcat(a[p],c);
			p++;
		}
	}
	freopen("dictionary.txt","w",stdout);
	for(i=0;i<p;i++)
	{
		printf("%s\n",a[i]);
	}
	freopen("CON","r",stdin); 
	freopen("CON","w",stdout);
}
void print()
{
	char a[100];int cout=0;
	freopen("dictionary.txt","r",stdin);
	while(scanf("%s",a)!=EOF)
	{
		cout++;
		for(int i=0;i<strlen(a);i++)
		putchar(a[i]);
		if(cout%2==0)putchar('\n');
		else printf(" "); 
	}
	freopen("CON","r",stdin); //切换到从控制台输入数据
	freopen("CON","w",stdout);
}
int main()
{
	char a[100],b[100];
	int op,x;
printf("\t\t\t\t/********   电子英汉查询系统   *********/\n");
printf("\n\n");
printf("\t\t\t\t/*********   搜查单词请按1   *********/\n");
printf("\t\t\t\t/*********   增加单词请按2   *********/\n");
printf("\t\t\t\t/*********   删除单词请按3   *********/\n");
printf("\t\t\t\t/*********   替换单词请按4   *********/\n");
printf("\t\t\t\t/*********   显示词库请按5   *********/\n\n\n");
printf("如果您在进行一个操作后，又想进行其它操作，请根据所给提示退出当前操作");
printf("\n\n\n");
printf("请输入您想输入的操作:\n"); 	
	while(1)
	{
	printf("**************************************************\n");scanf("%d",&op);//printf("**************************************************\n");
	if(op==1)
	{
		while(1)
		{
			printf("**************************************************\n");
			printf("输入你想要查询的单词\n");
			printf("**************************************************\n");scanf("%s",a);
			Search(a);//
			printf("**************************************************\n");
			printf("再次输入按1，返回总菜单按2\n");
			printf("**************************************************\n");scanf("%d",&x);
			if(x==1)continue;
			else { break;} 
		}
	}
	else if(op==2)
	{
		while(1)
		{printf("**************************************************\n");
			printf("请输入你想增加的单词和释义\n");
			printf("**************************************************\n");
			scanf("%s%s",a,b);
			Add(a,b);
			printf("**************************************************\n");printf("再次输入按1，返回总菜单按2\n");printf("**************************************************\n");
			scanf("%d",&x);
			if(x==1)continue;
			else { break;} 
		}
	}
	else if(op==3)
	{
		while(1)
		{ 
			printf("**************************************************\n");printf("输入你想删除的单词\n");
			printf("**************************************************\n");scanf("%s",a);Delete(a);
			printf("**************************************************\n");printf("再次输入按1，返回总菜单按2\n");
			printf("**************************************************\n");scanf("%d",&x);
			if(x==1)continue;
			else { break;} 
		}
	} 
	else if(op==4)
	{
		while(1)
		{
			printf("**************************************************\n");printf("按顺序输入替换前的单词和替换后的单词\n");
			printf("**************************************************\n");scanf("%s%s",a,b);Change(a,b);
			printf("**************************************************\n");printf("再次输入按1，返回总菜单按2\n");
			printf("**************************************************\n");scanf("%d",&x);
			if(x==1)continue;
			else { break;}
		}
	}
	else if(op==5)
	{
		printf("**************************************************\n");printf("打印单词库\n"); 
		printf("**************************************************\n");print();
	}
	} return 0;
}