上一次作的 连我自己都看不懂 吸收消化了一下 又做了一次 果然快多了 而且也是用阿哲说的 一次输入 一次输出的方法 又比较单纯 应该很容易看的懂 只要这篇看的懂 应该期末就没有问题 又为方便阅读 给个网址 http://homepage.ntu.edu.tw/~b91505032/program_14.txt 以下 =================================================================== #include <stdio.h> #include <stdlib.h> #include <string.h> #include <conio.h> struct score { int id; char name[30]; char sexy[5]; char birthplace[30]; int age; struct score *next; }; struct score *start, *nowsc, *newsc; FILE *file; int total; char idstr[5]; char agestr[5]; void readfile(); void writefile(); void cmd_1_list(); void cmd_2_add(); void cmd_3_del(); void cmd_4_search(); void cmd_5_modify(); void main() { char cmd; readfile(); do { printf("\n" "欢迎使用阿海的个人资料管理系统\n" "本系统提供以下功能:\n" "1.列出清单\n" "2.新增资料\n" "3.删除资料\n" "4.查询资料\n" "5.修改资料\n" "请输入 ... "); cmd = getchar(); getchar(); switch (cmd) { case '1': cmd_1_list(); break; case '2': cmd_2_add(); break; case '3': cmd_3_del(); break; case '4': cmd_4_search(); break; case '5': cmd_5_modify(); break; } printf("\n" "是否继续使用? 是(y) 否(n): "); cmd=getchar(); getchar(); }while(cmd!='n'); printf("\n谢谢使用!!!\n"); writefile(); free(start); } void readfile() { file = fopen("data.txt","r"); do { newsc = (struct score *)malloc(sizeof(struct score)); if (start==0) start = nowsc = newsc; else { nowsc = start; while(nowsc->next != (struct score *)NULL) nowsc = nowsc->next; nowsc->next = newsc; nowsc = newsc; } fscanf(file,"%s%s%s%s%s",idstr,nowsc->name,nowsc->sexy, \ nowsc->birthplace,agestr); total = nowsc->id = atoi(idstr); nowsc->age = atoi(agestr); nowsc->next = (struct score *)NULL; }while(!feof(file)); fclose(file); } void writefile() { file = fopen("data.txt","w"); nowsc = start; while(nowsc != (struct score *)NULL) { fprintf(file,"%d %s %s %s %d\n",nowsc->id,nowsc->name, \ nowsc->sexy,nowsc->birthplace,nowsc->age); nowsc = nowsc->next; } fclose(file); } void cmd_1_list() { nowsc = start; while(nowsc != (struct score *)NULL) { printf("%d\t%s\t%s\t%s\t%d\n",nowsc->id,nowsc->name \ ,nowsc->sexy,nowsc->birthplace,nowsc->age); nowsc = nowsc->next; } } void cmd_2_add() { newsc = (struct score *)malloc(sizeof(struct score)); if(start==0) start = nowsc = newsc; else { nowsc = start; while(nowsc->next != (struct score *)NULL) nowsc = nowsc->next; nowsc->next = newsc; nowsc = newsc; } nowsc->id = ++total; printf("请输入姓名: "); gets(nowsc->name); printf("请输入性别: "); gets(nowsc->sexy); printf("请输入出生地: "); gets(nowsc->birthplace); printf("请输入年龄: "); gets(agestr); nowsc->age = atoi(agestr); nowsc->next = (struct score *)NULL; } void cmd_3_del() { int delid; struct score *link; cmd_1_list(); printf("要删除第几笔资料: "); scanf("%d",&delid); getchar(); if(delid==1) start = start->next; else { link = nowsc = start; while(nowsc->next != (struct score *)NULL) { nowsc = nowsc->next; link->next = (struct score *)NULL; if(nowsc->id != delid) { link->next = nowsc; link = nowsc; } } } nowsc = start; while(nowsc != (struct score *)NULL) { if(nowsc->id>delid) nowsc->id--; nowsc = nowsc->next; } total--; } void cmd_4_search() { int keyid; char keyword[30]; char cmd; printf("输入 (1)标号(2)姓名 搜寻: "); cmd=getchar(); getchar(); switch(cmd) { case '1': printf("请输入标号: "); scanf("%d",&keyid); getchar(); nowsc = start; while(nowsc != (struct score *)NULL) { if(nowsc->id == keyid) printf("%d\t%s\t%s\t%s\t%d\n",nowsc->id, \ nowsc->name,nowsc->sexy,nowsc->birthplace,\ nowsc->age); nowsc = nowsc->next; } break; case '2': printf("请输入姓名: "); gets(keyword); nowsc = start; while(nowsc != (struct score *)NULL) { if(strcmp(nowsc->name,keyword)==0) printf("%d\t%s\t%s\t%s\t%d\n",nowsc->id, \ nowsc->name,nowsc->sexy,nowsc->birthplace,\ nowsc->age); nowsc = nowsc->next; } break; } } void cmd_5_modify() { int modid; cmd_1_list(); printf("修改第几笔: "); scanf("%d",&modid); getchar(); nowsc = start; while(nowsc != (struct score *)NULL) { if(nowsc->id == modid) break; nowsc = nowsc->next; } printf("请重新输入姓名(原值为[%s]): ",nowsc->name); gets(nowsc->name); printf("请重新输入性别(原值为[%s]): ",nowsc->sexy); gets(nowsc->sexy); printf("请重新输入出生地(原值为[%s]): ",nowsc->birthplace); gets(nowsc->birthplace); printf("请重新输入年龄(原值为[%d]): ",nowsc->age); gets(agestr); nowsc->age = atoi(agestr); } --

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