英语词典不能读写 求帮助！！尤其是红色部分不太清楚什么意思......
// xujianfeng.cpp : Defines the entry point for the console application.//
#include "stdafx.h"
#include "stdio.h"
#include "stdlib.h"
#include "string.h"
#include "assert.h"
#include "memory.h"
typedef struct word
{char cnword[18];
char enword[128];
struct word *next;
}*Ptrword,word;
FILE *fp;
char filename[20];
Ptrword New;
void Open_word();
void Create_word(word **T);
void Search_word(Ptrword T);
void Scan_word(Ptrword T);
void Add_word(Ptrword T);
void Modify_word(Ptrword T);
void Delete_word(Ptrword T);
void Output_word(Ptrword T);
void free_word(Ptrword T);
void my_strcpy(char *s, char *t);
void New_word(Ptrword T);
int main(int argc, char* argv[])
{
Ptrword T;
word a;
int i,t=1;
T = &a;
while(1)
{
if( t == 1)
{
printf("\n\n\t----------------操作界面-----------------\n\n");
printf("\n\t打开英语词典，请按1\n");
printf("\t创建链表文件，请按2\n");
printf("\t英语词典查询，请按3\n");
printf("\t英语词典浏览，请按4\n");
printf("\t英语词典添加，请按5\n");
printf("\t修改单词释义，请按6\n");
printf("\t删词某个单词，请按7\n");
printf("\t退出，请按8");
t = 0;
}
printf("\n请输入你所要进行的操作：");
scanf("%d",&i);
switch(i)
{
case 1:Open_word();
break;
case 2:Create_word(&T);
break;
case 3:Search_word(T);
break;
case 4:Scan_word(T);
break;
case 5:Add_word(T);
break;
case 6:Modify_word(T);
break;
case 7:Delete_word(T);
break;
case 8:printf("欢迎您下次继续使用！\n");
Output_word(T);
free_word(T);
return 0;
default:printf("输入错误！");
printf("请选择是否查看操作界面，是请按1:");
scanf("%d",&t);
break;
}
}
return 0;
}
void Open_word()
{
if((fp = fopen("English-Chinese.txt", "r+")) ==NULL)
{
printf("\n\n不能建立词库!");
exit(0);
}
else
printf("文件已打开！");
fclose(fp);
}
void Create_word(word **T)
{
assert(*T!=NULL);
FILE *fp_word;
Ptrword p,q;
int i = 0;
*T = NULL;
if((fp_word = fopen("English-Chinese.txt", "r+")) ==NULL)
{
printf("\n\n不能打开词库!");
exit(0);
}
while(!feof(fp_word))
{
p = (Ptrword)malloc(sizeof(word));
fgets(p->cnword,18,fp_word);
for(i = 0;p->cnword[i] != '\n';i++)
;
p->cnword[i] = '\0';
fgets(p->enword,128,fp_word);
if(*T==NULL)
*T = p;
else
q->next = p;
q = p;
}
if(*T != NULL)
q->next = NULL;
printf("词库链表建立完毕！\n");
fclose(fp_word);
}
void Search_word(Ptrword T)
{
assert(T!=NULL);
Ptrword p = T;
char s[20];
int i ;
printf("输入你要查询的单词：");
scanf("%s",s);
while( p && ((i = strcmp(p->cnword , s)) != 0))
{
//printf("%s %d",p->cnword, i);
p = p->next;
}
if(p != NULL)
printf("存在！该单词的释义：%s",p->enword);
else
printf("该单词不存在！");
}
void Scan_word(Ptrword T)
{
assert(T != NULL);
char ch,c;
Ptrword p = T, q;
while(1)
{
printf("请输入您要浏览的单词的首字母：");
getchar();
scanf("%c",&ch);
while( p && (p->cnword[0] != ch))
q = p,p = p->next;
if(!p)
printf("没有以该字母为首字母的单词\n");
else
{
printf("\n-----------浏览操作-------------\n");
printf("\t向上浏览，请按a\n");
printf("\t向下浏览，请按l\n");
printf("\t退出浏览，请按x\n");
while(1)
{
printf("当前单词%s\t%s",p->cnword,p->enword);
printf("请输入操作命令：");
getchar();
scanf("%c",&c);
switch(c){
case 'a':
if(p == T)
{
printf("这是第一个单词，不能向上了！\n");
break;
}
else
{
p = q;
printf("\n%s\t%s",p->cnword, p->enword);
New_word(p);
break;
}
case 'l':
if(p->next == NULL)
{
printf("这是最后一个单词，不能向下了！\n");
break;
}else
{
p = p->next;
q = p;
printf("\n%s\t%s",p->cnword, p->enword);
New_word(p);
break;
}
case 'x':printf("\n已退出。。。。\n");
Output_word(New);
free_word(New);
break;
default:printf("\n输入错误！");
break;
}
}
}
}
}
void New_word(Ptrword T)
{
assert(T != NULL);
Ptrword p,q = New;
int i;
printf("该单词是不是生词(是请按1), 是不是已熟记该单词(是请按2),否则继续浏览：");
getchar();
scanf("%d",&i);
if(i == 1)
{
p = (Ptrword)malloc(sizeof(word));
my_strcpy(p->cnword ,T->cnword);
my_strcpy(p->enword, T->enword);
if(New == NULL)
New = p;
else
{
while(q->next)
q = q->next;
q->next = p;
}
p->next = NULL;
}
else if(i == 2)
{
while(q)
{
while(q && ((strcmp(T->cnword ,q->cnword)) != 0))
p = q,q = q->next;
if(q)
{
printf("改单词在生词库中，是否要删除(是请按1):");
scanf("%d",&i);
if(i == 1)
{
if(q == New)
{
if(q->next != NULL)
{
New = New->next;
free(q);
break;
}
else
{
free(q),New = NULL;
break;
}
}
else if(q->next == NULL)
{
p->next = NULL,
free(q);
break;
}
}
else
break;
}
else
break;
}
}
else
printf("请继续浏览！\n");
}
void my_strcpy(char *s, char *t)
{
while(*s++ = *t++)
;
*s = '\0';
}
void Add_word(Ptrword T)
{
assert(T != NULL);
Ptrword p = T,q,t;
int i;
char s[20],b[128];
printf("请输入您要添加的新单词：");
getchar();
gets(s);
printf("请输入您要添加的新单词的释义：");
scanf("%s",b);
while(p && ((i = strcmp(p->cnword, s)) < 0))
t = p,p = p->next;
if(i == 0)
printf("此单词已存在，无需添加！");
else if( i > 0 )
{
q = (Ptrword)malloc(sizeof(word));
my_strcpy(q->cnword , s);
my_strcpy(q->enword , b);
q->enword[strlen(q->enword)+1] = '\0';
q->enword[strlen(q->enword)] = '\n';
t->next = q;
q->next = p;
}
else
{
q = (Ptrword)malloc(sizeof(word));
my_strcpy(q->cnword , s);
my_strcpy(q->enword , b);
t->next = q;
q->next = NULL;
}
}
void Modify_word(Ptrword T)
{
assert(T != NULL);
Ptrword p = T;
int i= 1;
char s[20];
while(i==1)
{
printf("输入要修改的单词：");
getchar();
scanf("%s",s);
i = 0;
while(p && (strcmp(p->cnword, s) != 0))
p = p->next;
if(p)
{
memset(p->enword, 128 ,0);
printf("\n输入新的释义：");
getchar();
scanf("%s",p->enword);
p->enword[strlen(p->enword)+1] = '\0';
p->enword[strlen(p->enword)] = '\n';
}
else
{
printf("没有此单词！是否从新输入(是请按1，否请按0)");
getchar();
scanf("%d",&i);
}
}
}
void Delete_word(Ptrword T)
{
assert(T != NULL);
Ptrword p = T,q;
char s[20];
int i = 1;
while(i == 1)
{
printf("请输入要删除的单词：");
getchar();
scanf("%s", s);
while(p && (strcmp(p->cnword, s) != 0))
q = p,p = p->next;
if(p)
{
q->next = p->next;
free(p);
printf("%s:删除成功！\n",s);
printf("是否继续(是请按1，否请按0)");
scanf("%d",&i);
}
else
{
printf("没有此单词！是否从新输入(是请按1，否请按0)");
getchar();
scanf("%d",&i);
}
}
}
void Output_word(Ptrword T)
{
assert(T != NULL);
Ptrword p = T;
printf("请输入词库名：");
getchar();
scanf("%s",filename);
if((fp = fopen(filename, "w")) ==NULL)
{
printf("\n\n不能建立词库!");
exit(0);
}
while(p)
{
fputs(p->cnword, fp);
fputc('\n',fp);
fputs(p->enword, fp);
fputc('\n', fp);
p = p->next;
}
fclose(fp);
}
void free_word(Ptrword T)
{
assert(T != NULL);
Ptrword p , q;
for(p = T; p; )
{
q = p;
p = p->next;
free(q);
}
}
程序代码：