#include <stdio.h>?? ?//引入庫函數(shù)
#include <stdlib.h>
#include <string.h>
#define szWORD 50?? ?//單詞長度最大50
#define szSTRN 200?? ?//釋義長度最大200
#define szProject sizeof(struct Dictionary)
char fileDict[szSTRN];
typedef struct ? Dictionary{
char word[szWORD];
char mean[szSTRN];
} Project ; //定義字典結(jié)構(gòu)體，定義兩個(gè)字符型變量單詞和釋義
fpos_t consult(char *word, char *mean)
{
FILE * f = 0; Project ?i;?
int r = 0; fpos_t p = 0;
if(!word) return 0;
f = fopen(fileDict, "rb");
if (!f) return 0;
while(!feof(f)) {
? fgetpos(f, &p);
? r = fread(&i, szProject , 1, f);
? if(r < 1) break;
? if(i.word[0] == 0) continue;
? if(strcmp(i.word , word)) continue;
? if(mean) strcpy(mean, i.mean );
? fclose(f);
? return p+1; }
fclose(f);
return 0;}
void Search(void);
void Append(void);
void Delete(void);
void Update(void);
?
int main(int argk, char * argh[])
{
int m= 0;
if(argk>1)?
? strcpy(fileDict, argh[1]);
else
? strcpy(fileDict, "c:\\dict.txt");
for(;;) {
printf("\n\
--------------------\n\
歡迎使用電子英漢詞典！\n\
--------------------\n\
1 - 查詢詞條\n\
2 - 新增詞條\n\
3 - 刪除詞條\n\
4 - 修改詞條\n\
5 - 退出詞典\n\
--------------------\n");
? m = getchar() - '0';
? switch(m) {
case 1: Search();break;
case 2: Append();break;
case 3: Delete();break;
case 4: Update();break;
default : return 0;}
}
return 0;
}
?
void Search(void)
{
?Project i; fpos_t p = 0;
memset(&i, 0, szProject );
printf("please input the word ?you want："); scanf("%s", i.word );
p = consult(i.word, i.mean );
if(p==0) {
? printf("sorry do not find what you want！\n");
? return;
}
printf("單詞：%s\n釋義：%s", i.word , i.mean );
}
void Append(void)
{
Project ?i; FILE * f = 0; fpos_t p = 0;
memset(&i, 0, szProject );
printf("please input the word you want："); scanf("%s", i.word );
p = consult(i.word,0);
if(p) ? ? {
? printf("sorry do not find what you want!\n");
? return;
}
printf("please giving the meaning，按確認(rèn)結(jié)束：");?
fflush(stdin);
gets(i.mean );
f = fopen(fileDict, "ab");
fwrite(&i, szProject , 1, f);
fclose(f);
printf("詞條已新增\n");
}
void Delete(void)
{
?Project ?i; FILE * f = 0; fpos_t p = 0;
memset(&i, 0, szProject );
printf("please input the word you want："); scanf("%s", i.word );
p = consult(i.word, 0 );
if(p==0) {
? printf("sorry do not find what you want！\n");
? return;
}
p--;
memset(&i, 0, szProject);
f = fopen(fileDict, "rb+");
fsetpos(f, &p);
fwrite(&i, szProject , 1, f);
fclose(f);
printf("詞條已刪除\n");
}
void Update(void)
{
?Project ?i; FILE * f = 0; fpos_t p = 0;?
memset(&i, 0, szProject );
printf("please input the word you want："); scanf("%s", i.word );
p = consult(i.word, 0 );
if(p==0) {
? printf("sorry do not find what you want！\n");
? return;
}
p--;
printf("please giving the meaning，按確認(rèn)結(jié)束（輸入drop放棄修改）：");?
fflush(stdin);
gets(i.mean );
if(strstr(i.mean ,"drop")) {
? printf("已放棄修改！\n");
? return ;
}
f = fopen(fileDict, "rb+");
fsetpos(f, &p);
fwrite(&i, szProject , 1, f);
fclose(f);
printf("詞條已保存\n");
}