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#include <conio.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#define szWORD 32
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#define szSTRN 224
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#define szITEM sizeof(struct TItem)
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char fileDict[szSTRN];
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typedef struct TItem {
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char word[szWORD];
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char mean[szSTRN];
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} Item;
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fpos_t lookup(char *word, char *mean)
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{
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FILE * f = 0; Item i;
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int r = 0; fpos_t p = 0;
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if(!word) return 0;
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f = fopen(fileDict, "rb");
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if (!f) return 0;
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while(!feof(f)) {
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fgetpos(f, &p);
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r = fread(&i, szITEM, 1, f);
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if(r < 1) break;
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if(i.word[0] == 0) continue;
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if(strcmp(i.word , word)) continue;
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if(mean) strcpy(mean, i.mean );
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fclose(f);
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return p+1;
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}
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fclose(f);
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return 0;
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}
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void append(void)
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{int x=0;
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while(x==0)
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{
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Item i; FILE * f = 0; fpos_t p = 0;
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memset(&i, 0, szITEM);
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printf("请输入单词："); scanf("%s", i.word );
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p = lookup(i.word, 0 );
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if(p) {
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printf("字典内已经有该单词记录！\n");
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printf("请输入0（继续执行），或者1（返回主程序）");
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scanf("%d",&x);
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continue;
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}
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printf("请输入释义，按回车结束：");
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fflush(stdin);
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gets(i.mean );
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f = fopen(fileDict, "ab");
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fwrite(&i, szITEM, 1, f);
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fclose(f);
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printf("词条已新增\n");
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printf("请输入0（继续执行），或者1（返回主程序）");
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scanf("%d",&x);
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}
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}
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void erase(void)
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{int x=0;
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while(x==0)
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{
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Item i; FILE * f = 0; fpos_t p = 0;
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memset(&i, 0, szITEM);
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printf("请输入单词："); scanf("%s", i.word );
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p = lookup(i.word, 0 );
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if(p==0) {
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printf("字典内没有该单词记录！\n");
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printf("请输入0（继续执行），或者1（返回主程序）");
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scanf("%d",&x);
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continue;
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}
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p--;
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memset(&i, 0, szITEM);
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f = fopen(fileDict, "rb+");
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fsetpos(f, &p);
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fwrite(&i, szITEM, 1, f);
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fclose(f);
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printf("词条已删除\n");
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printf("请输入0（继续执行），或者1（返回主程序）");
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scanf("%d",&x);
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}
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}
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void edit(void)
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{
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int x=0;
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while(x==0)
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{
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Item i; FILE * f = 0; fpos_t p = 0;
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memset(&i, 0, szITEM);
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printf("请输入单词："); scanf("%s", i.word );
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p = lookup(i.word, 0 );
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if(p==0)
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{
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printf("字典内没有该单词记录！\n");
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return;
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}
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p--;
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printf("请输入释义，按回车结束（输入abort放弃修改）：");
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fflush(stdin);
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gets(i.mean );
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if(strstr(i.mean ,"abort")) {
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printf("已放弃修改！\n");
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printf("请输入0（继续执行），或者1（返回主程序）");
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scanf("%d",&x);
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continue ;
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}
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f = fopen(fileDict, "rb+");
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fsetpos(f, &p);
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fwrite(&i, szITEM, 1, f);
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fclose(f);
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printf("词条已保存\n");
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printf("【词条】%s\n【释义】%s\n", i.word , i.mean );
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printf("请输入0（继续执行），或者1（返回主程序）");
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scanf("%d",&x);
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}
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return;
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}
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void query(void)
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{ int x=0;
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while(x==0)
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{
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Item i; fpos_t p = 0;
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memset(&i, 0, szITEM);
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printf("请输入单词："); scanf("%s", i.word );
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p = lookup(i.word, i.mean );
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if(p==0)
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{
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printf("字典内没有该单词记录！\n");
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printf("请输入0（继续执行），或者1（返回主程序）");
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scanf("%d",&x);
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continue;}
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printf("【词条】%s\n【释义】%s\n", i.word , i.mean );
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printf("请输入0（继续执行），或者1（返回主程序）");
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scanf("%d",&x);
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}
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}
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void set(void)
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{
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Item i[11]={"apple","苹果","you","你","student","学生","life","生活","just","只是","one","一场","travel","旅行","human","人","must","必须","grow","成长"};
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FILE *f=0;
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int p=0;
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f=fopen(fileDict,"ab");
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fwrite(&i,szITEM,11,f);
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fclose(f);
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printf("词条初始化成功");
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}
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int main(int argc, char * argv[])
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{
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int cmd = 0;
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if(argc >1)
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strcpy(fileDict, argv[1]);
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else
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strcpy(fileDict, "c:\\dict.txt");
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/*end if*/
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for(;;) {
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printf("\n\
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*湖********工********大*\n\
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** 欢迎使用迷你字典！***\n\
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************************\n\
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** 0 - 设置字典 ********\n\
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** 1 - 查询词条 ********\n\
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** 2 - 新增词条 ********\n\
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** 3 - 编辑词条 ********\n\
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** 4 - 删除词条 ********\n\
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** 5 - 退出字典 ********\n\
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************************\n");
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cmd = getch() - '0';
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switch(cmd) {
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case 0: set(); break;
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case 1: query();system("cls"); break;
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case 2: append();system("cls"); break;
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case 3: edit();system("cls"); break;
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case 4: erase();system("cls"); break;
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default: return 0;
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}
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}
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return 0;
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}
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