拥有所有功能自动售货机C语言
主要功能:欢迎页面、通过文本文件读入货物信息、上货、卖货(包含找零,付款不足等多种情况)、增加新品种、按单价从高到低排序、按序号排序、退出前将所有货物信息回写进文本文档 实际代码非常简单
使用环境
VS2017编译运行正常;
DEV C++删除第一行(#define _CRT_SECURE_NO_WARNINGS)
注意事项
1.第一次使用需要进入系统维护录入所有信息.
2.在使用时会在桌面创建一个文本文件记录数据,下次运行也会有数据.
3.录入数据时一定注意按照系统提示,一定要先输入编号再进行创建新的品种,可以输入中文名称,如农夫山泉.
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//初次使用请进行系统维护并录入商品信息 #define _CRT_SECURE_NO_WARNINGS #include <stdio.h> #define SIZE 100000 #include<string.h> #include<stdlib.h> #include<conio.h> //货物数据结构 struct huowu { int n; //编号 char name[10]; //名称 int Price; //价格 int Maths; //剩余数量 }s[SIZE]; /*录入数据*/ void finput() { FILE *fp; int i, t, x = 1; fp = fopen ( "fs+" , "w" ); // printf ( "已进入重新录入数据界面,之前数据将被清除!\n\n请按提示输入编号\n" ); for (i = 0; i < SIZE; i++) { printf ( " 第%d个 请输入编号(请与左方编号一致,按回车键进入下一步,当输入i=-1时,完成录入商品信息)\n" , x++); //需要逐一手动先输入编号 scanf ( "%d" , &t); i = t; if (i == -1) { fclose (fp); return ; } else { i = t - 1; printf ( "请输入 名称 价格 及添加的 库存 ,用空格间隔开,按回车键继续\n" ); scanf ( "%s %d %d" , &s[i].name, &s[i].Price, &s[i].Maths); s[i].n = i + 1; fwrite (&s[i], sizeof ( struct huowu), 1, fp); } } fclose (fp); } /*输出数据*/ void flist() { FILE *fp; int i; fp = fopen ( "fs+" , "r" ); printf ( "※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※\n" ); printf ( " 列表\n" ); printf ( "-----------------------------------------------------------\n" ); printf ( "序号 名称 价格 库存 \n" ); printf ( "-----------------------------------------------------------\n" ); for (i = 0; fread (&s[i], sizeof ( struct huowu), 1, fp) == 1; i++) { printf ( "%d%18s%16d%16d\n" , s[i].n, s[i].name, s[i].Price, s[i].Maths); } printf ( "-----------------------------------------------------------\n\n" ); printf ( "※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※\n" ); fclose (fp); } /*修改数据*/ void fchange() { FILE *fp; int k; fp = fopen ( "fs+" , "r" ); printf ( "※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※\n" ); printf ( " 列表\n" ); printf ( "-----------------------------------------------------------\n" ); printf ( "序号 名称 价格 库存 \n" ); printf ( "-----------------------------------------------------------\n" ); for (k = 0; fread (&s[k], sizeof ( struct huowu), 1, fp) == 1; k++) { printf ( "%d%18s%16d%16d\n" , s[k].n, s[k].name, s[k].Price, s[k].Maths); } printf ( "-----------------------------------------------------------\n\n" ); printf ( "※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※\n" ); int i, n; int flag = 0; printf ( "请输入要修改商品的序号:" ); scanf ( "%d" , &n); for (i = 0; i <= SIZE; i++) if (s[i].n == n) { printf ( "※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※\n" ); printf ( " 列表\n" ); printf ( "-----------------------------------------------------------\n" ); printf ( "序号 名称 价格\n" ); printf ( "-----------------------------------------------------------\n" ); printf ( "%d%32s%25d\n" , s[i].n, s[i].name, s[i].Price); printf ( "-----------------------------------------------------------\n\n" ); printf ( "※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※\n" ); n = i; flag = 1; break ; } if (flag == 0) { printf ( "※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※\n" ); printf ( " 输入错误!\n" ); printf ( " 请重新选择!\n" ); printf ( "※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※\n" ); return ; } printf ( "\n\n\n" ); fp = fopen ( "fs+" , "r+" ); fseek (fp, n * sizeof ( struct huowu), 0); printf ( "请输入新的 名称 价格:" ); scanf ( "%s%d" , s[i].name, &s[i].Price); fwrite (&s[i], sizeof ( struct huowu), 1, fp); fclose (fp); fp = fopen ( "fs+" , "r" ); printf ( "※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※\n" ); printf ( " 列表\n" ); printf ( "-----------------------------------------------------------\n" ); printf ( "序号 名称 价格\n" ); printf ( "-----------------------------------------------------------\n" ); for (i = 0; fread (&s[i], sizeof ( struct huowu), 1, fp) == 1; i++) { printf ( "%d%28s%28d\n" , s[i].n, s[i].name, s[i].Price); } printf ( "-----------------------------------------------------------\n\n" ); printf ( "※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※\n" ); fclose (fp); } /* 排序*/ void ftaxis() { int i, j, n; FILE *fp; struct huowu t; fp = fopen ( "f.s+" , "r" ); printf ( "※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※\n" ); printf ( " 列表\n" ); printf ( "-----------------------------------------------------------\n" ); printf ( "序号 名称 价格\n" ); printf ( "-----------------------------------------------------------\n" ); for (i = 0; fread (&s[i], sizeof ( struct huowu), 1, fp) == 1; i++) { printf ( "%d%28s%28d\n" , s[i].n, s[i].name, s[i].Price); } printf ( "-----------------------------------------------------------\n\n" ); printf ( "※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※\n" ); fclose (fp); n = i; for (i = 0; i < n; i++) for (j = i + 1; j < n; j++) if (s[i].Price < s[j].Price) { t = s[i]; s[i] = s[j]; s[j] = t; } fp = fopen ( "fss+" , "w" ); printf ( "\n\n\n" ); printf ( "※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※\n" ); printf ( " 列表 \n" ); printf ( "-----------------------------------------------------------\n" ); printf ( "序号 名称 价格\n" ); printf ( "-----------------------------------------------------------\n" ); for (i = 0; i < n; i++) { fwrite (&s[i], sizeof ( struct huowu), 1, fp); printf ( "%d%28s%28d\n" , s[i].n, s[i].name, s[i].Price); } printf ( "※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※\n" ); fclose (fp); } //添加库存 int fadd() { FILE *fp; int i, num, n; int flag = 0; printf ( "请输入要补货 商品 的序号:" ); scanf ( "%d" , &n); for (i = 0; i <= SIZE; i++) if (s[i].n == n) { printf ( "※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※\n" ); printf ( " 列表\n" ); printf ( "-----------------------------------------------------------\n" ); printf ( "序号 名称 库存\n" ); printf ( "-----------------------------------------------------------\n" ); printf ( "%d%8s%8d\n" , s[i].n, s[i].name, s[i].Maths); printf ( "-----------------------------------------------------------\n\n" ); printf ( "※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※\n" ); n = i; flag = 1; break ; } if (flag == 0) { printf ( "※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※\n" ); printf ( " 输入错误!\n" ); printf ( " 请返回!\n" ); printf ( "※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※\n" ); return 0; } printf ( "\n\n\n" ); fp = fopen ( "fs+" , "r+" ); fseek (fp, n * sizeof ( struct huowu), 0); printf ( "请输入添加后此商品总个数" ); scanf ( "%d" , &s[i].Maths); fwrite (&s[i], sizeof ( struct huowu), 1, fp); fclose (fp); fp = fopen ( "fs+" , "r" ); printf ( "※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※\n" ); printf ( " 列表\n" ); printf ( "-----------------------------------------------------------\n" ); printf ( "序号 名称 库存\n" ); printf ( "-----------------------------------------------------------\n" ); for (i = 0; fread (&s[i], sizeof ( struct huowu), 1, fp) == 1; i++) { printf ( "%d%8s%8d\n" , s[i].n, s[i].name, s[i].Maths); } printf ( "------------------------补货完成-------------------------\n\n" ); printf ( "※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※\n" ); fclose (fp); } /*内部操作systeam*/ int neibu() { system ( "cls" ); int n; for (;;) { printf ( "\n" ); printf ( "※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※\n" ); printf ( "※ ※\n" ); printf ( "※ 欢迎进入自动售货机(内部) ※\n" ); printf ( "※ ※\n" ); printf ( "※ ※\n" ); printf ( "※ 主菜单 ※\n" ); printf ( "※ ※\n" ); printf ( "※ ▲1.重新所有录入数据▲ ※\n" ); printf ( "※ ▲2.展示商品信息▲ ※\n" ); printf ( "※ ▲3.补充库存▲ ※\n" ); printf ( "※ ▲4.修改数据▲ ※\n" ); printf ( "※ ▲5.按照价格排序并生成另一个文件▲ ※\n" ); printf ( "※ ▲6.退出系统▲ ※\n" ); printf ( "※ ※\n" ); printf ( "※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※\n\n" ); printf ( "请输入选择项(1-6):" ); scanf ( "%d" , &n); printf ( "\n\n\n\n" ); if (n > 0 && n < 8) { switch (n) { case 1:finput(); break ; case 2:flist(); break ; case 3:fadd(); break ; case 4:fchange(); break ; case 5:ftaxis(); break ; case 6: printf ( "※※※※※※※※※※※※※※※※※※※※※※※※\n" ); printf ( "※ ※\n" ); printf ( "※ 谢谢使用! ※\n" ); printf ( "※ 再见! ※\n" ); printf ( "※ ※\n" ); printf ( "※※※※※※※※※※※※※※※※※※※※※※※※\n" ); system ( "pause" ); system ( "cls" ); //清空屏幕 return 0; // exit(0); } } else { printf ( "※※※※※※※※※※※※※※※※※※※※※※※※\n" ); printf ( "※ ※\n" ); printf ( "※ 输入错误! ※\n" ); printf ( "※ 请退出! ※\n" ); printf ( "※ ※\n" ); printf ( "※※※※※※※※※※※※※※※※※※※※※※※※\n" ); break ; } } system ( "cls" ); //清空屏幕 } /*购买*/ void buy() { FILE *fp; int i; system ( "cls" ); fp = fopen ( "fs+" , "r" ); printf ( "※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※\n" ); printf ( " 列表\n" ); printf ( "-----------------------------------------------------------\n" ); printf ( "序号 名称 价格 库存 \n" ); printf ( "-----------------------------------------------------------\n" ); for (i = 0; fread (&s[i], sizeof ( struct huowu), 1, fp) == 1; i++) { printf ( "%d%18s%16d%18d\n" , s[i].n, s[i].name, s[i].Price, s[i].Maths); } printf ( "----------------请输入需要的商品按回车继续-----------------\n" ); printf ( "-----------------------------------------------------------\n\n" ); printf ( "※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※\n" ); int num, n, B = 1; float money = 0.0, m = 0; int flag = 0; restar: printf ( "请输入要购买商品的序号:" ); scanf ( "%d" , &n); for (i = 0; i <= SIZE; i++) if (s[i].n == n) { printf ( "※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※\n" ); printf ( "-----------------------------------------------------------\n" ); printf ( "序号 名称 价格\n" ); printf ( "-----------------------------------------------------------\n" ); printf ( "%d%30s%26d元\n" , s[i].n, s[i].name, s[i].Price); printf ( "-----------------------------------------------------------\n\n" ); printf ( "※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※\n" ); n = i; flag = 1; break ; } if (flag == 0) { printf ( "※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※\n" ); printf ( " 输入错误!\n" ); printf ( " 请返回!\n" ); printf ( "※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※\n" ); return ; } printf ( "\n\n\n" ); fp = fopen ( "fs+" , "r+" ); fseek (fp, n * sizeof ( struct huowu), 0); s[i].Maths = s[i].Maths - 1; fwrite (&s[i], sizeof ( struct huowu), 1, fp); fclose (fp); fp = fopen ( "fs+" , "r" ); if (s[i].Maths <= 0) { printf ( "存货不足,请购买其他商品!\n" ); s[i].Maths = 0; goto restar; } else printf ( "※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※\n" ); printf ( "-----------------------------------------------------------\n" ); printf ( " 请 支 付 %d 元(仅限一元以上面额)\n" , s[i].Price); printf ( "-----------------------------------------------------------\n\n" ); printf ( "※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※\n" ); while (B) { scanf ( "%f" , &money); m += money; if (m < s[i].Price) { printf ( "金额不足,请继续支付\n\n" ); } if (m == s[i].Price) { printf ( "付款成功\n\n" ); B = 0; break ; s[i].Maths = s[i].Maths - 1; } if (m > s[i].Price) { money = m - s[i].Price; printf ( " 付款成功,找零%f请您收好\n\n\n\n 欢迎下次使用\n\n\n" , money); B = 0; break ; s[i].Maths = s[i].Maths - 1; } } fclose (fp); system ( "pause" ); } //主函数 int main() { char sr; //定义电脑接受的字符 system ( "color F0" ); start: //起始位置 system ( "cls" ); printf ( "※※※※※※※※※※※※※※※※※※※※※※※※\n" ); printf ( "※ 欢迎使用自动售货机(初始试用版) ※\n" ); printf ( "※ ※\n" ); printf ( "※ 请输入选项 ※\n" ); printf ( "※ a.用户购买 ※\n" ); printf ( "※ b.系统维护 ※\n" ); printf ( "※ ※\n" ); printf ( "※ 按回车继续 。。。 ※\n" ); printf ( "※※※※※※※※※※※※※※※※※※※※※※※※\n" ); scanf ( "\n%c" , &sr); switch (sr) { case 'a' : buy(); break ; case 'b' : neibu(); break ; } goto start; //回到起始位置 } |
程序截图
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。
原文链接:https://blog.csdn.net/new_bee_01/article/details/88764796