首页 > 代码库 > C语言 实现ATM系统
C语言 实现ATM系统
主要用到了指针、结构体、数组、链表、文件读取
由于平时用java，所以感觉自己的代码还是可以看看的，尽量用面向对象的思想去写,这也使得原本近千行代码的程序只用了不到一半的代码完成。
User.h //用户对象
struct User
{
char UserAccount[100];
char UserPassword[100];
int Money;
struct User *next;
};UI.h //就是一个简单的菜单显示
int showMenu(char MenuItem[][20], int itemCount){
system("cls");
for (int i = 0; i < 10;i++){
printf("\n");
}
printf("***************************************************\n");
for (int i = 0; i < itemCount; i++){
printf("* ");
printf("%d.", i+1);
int Str_size = 20;
for (int j = 0; j < 10; j++){
if (MenuItem[i][j] != '\0'){
putchar(MenuItem[i][j]);
}
else{
putchar(' ');
}
}
printf(" *\n");
}
printf("***************************************************");
return 0;
}FileContrller.h用于文件相关的操作，还有初始化
void writeIntoFIle(FILE *fp, char path[]){
fopen_s(&fp, path, "w+");
struct User *temp = (struct User *)malloc(sizeof(struct User));
temp = head;
for (int i = 0; i < 5; i++){
// printf("%s %s %d\n", temp->UserAccount, temp->UserPassword, temp->Money);
fprintf(fp, "%s %s %d\n", temp->UserAccount, temp->UserPassword, temp->Money);
if (temp->next != NULL)
temp = temp->next;
}
}
void initFile(FILE *fp, char path[]){
//fopen_s(&fp, path, "w+");
if (feof(fp)){
fprintf(fp, "%s %s %d\n", "6210300022352323", "123123", 10000);
fprintf(fp, "%s %s %d\n", "6210300022352527", "132132", 1000000);
fprintf(fp, "%s %s %d\n", "6210303002352323", "123123", 10000);
fprintf(fp, "%s %s %d\n", "6210300202235233", "123123", 10000);
fprintf(fp, "%s %s %d\n", "6213002323523233", "123123", 10000);
}
// fclose(fp);
}
void initdata(FILE *fp, char path[]){
/*printf("%d", fopen_s(&fp, path, "r+"));
printf("%d", fopen_s(&fp, path, "r+"));
printf("%d",fgetc(fp)==EOF);*/
if (fopen_s(&fp, path, "r+") == 0 && fgetc(fp) == EOF){
initFile(fp, path);
}
rewind(fp);
struct User *user;
Current_user = user = (struct User *)malloc(sizeof(struct User));
char temp[100];
//_getch();
while (fscanf_s(fp, "%s", &user->UserAccount, 100) != EOF){
fscanf_s(fp, "%s", &user->UserPassword, 100);
fscanf_s(fp, "%d\n", &user->Money, 100);
struct User *nextuser;
nextuser = (struct User *)malloc(sizeof(struct User));
printf("%s %s %d\n", user->UserAccount, user->UserPassword, user->Money);
if (head == NULL)
head = user;
user->next = nextuser;
user = nextuser;
}
fclose(fp);
}AccountController.h//与账户相关的操作，查找账户，验证密码什么的
bool checkAccount(char account[],struct User *u){
struct User *temp = (struct User *)malloc(sizeof(struct User));
struct User *headCopy = (struct User *)malloc(sizeof(struct User));
temp = head;
*headCopy =* head;
while (temp != NULL){
bool isExist = true;
/*printf("first%s %d\n", head->UserAccount, head->Money);
printf("temp%s %d\n", temp->UserAccount, temp->Money);*/
for (int i = 0; i < 16; i++)
{
if (account[i]!=temp->UserAccount[i])
{
isExist = false;
break;
}
}
if (isExist)
{
u=temp;
Current_user = u;
//*head =* headCopy;
/* printf("findout%s\n",u->UserAccount);
printf("afterchange%s %s\n", Current_user->UserAccount, head->UserAccount);
printf("headcopy%s %s\n", headCopy->UserAccount, headCopy->UserPassword);
_getch();*/
return true;
}
temp = (temp->next);
}
return false;
}
bool checkPassword(char Userpwd[], char Inputpwd[]){
for (int i = 0; i<6; i++){
if (Userpwd[i] != Inputpwd[i]){
return false;
}
}
return true;
}
void showAccount(char account[]){
int length = strlen(account);
if (length>16)
length=16;
for (int i = 0; i < length; i++){
putchar(account[i]);
if ((i+1) % 4 == 0&&i!=0){
putchar(' ');
}
}
}
void showPassword(int length){
if (length>6)
length = 6;
for (int i = 0; i < length; i++){
_putch('*');
}
}
void InputAccount(char UserAccount[]){
int i = 0;
system("cls");
printf("请输入用户名：");
while ((UserAccount[i] = _getch()) != '\r'&&i<16){
if (UserAccount[i] == 8&&i>0){
UserAccount[i] = '\0';
UserAccount[i-1] = '\0';
i--;
}
else if (UserAccount[i] >= '0' && UserAccount[i] <= '9'){
if (i <= 15)
i++;
}
system("cls");
printf("请输入用户名：");
showAccount(UserAccount);
}
}
void InputPassword(char account[],char pwd[]){
int i = 0;
system("cls");
printf("用户名：");
showAccount(account);
printf("\n请输入密码：");
while ((pwd[i] = _getch()) != '\r'){
if (pwd[i] == 8){
pwd[i] = '\0';
pwd[i - 1] = '\0';
i--;
}
else if (pwd[i] >= '0' && pwd[i] <= '9'){
if (i <= 5)
i++;
}
system("cls");
printf("用户名：");
showAccount(account);
printf("\n请输入密码：");
showPassword(strlen(pwd));
}
}
void WithDraw(int Count){
if (Count > Current_user->Money){
printf("取款金额超出存款");
return;
}
else {
system("cls");
printf("取款金额%d\n按任意键返回上一菜单",Count);
Current_user->Money -= Count;
}
}
void Deposit(int Count){
system("cls");
printf("存款金额%d\n按任意键返回上一菜单", Count);
Current_user->Money += Count;
}
主程序入口
Main.cpp
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <conio.h>
struct User *head, *Current_user;
#include "User.h"
#include "UI.h"
#include "AccountController.h"
#include "FileController.h"
int InputMoney(){
int result = 100;
char inputItem = '\0';
int i = 0;
system("cls");
printf("输入金额：");
while ((inputItem = _getch()) != '\r'){
system("cls");
printf("输入金额：");
if (inputItem >= '0'&&inputItem <= '9'){
if (result != 100){
result *= 10;
result += (inputItem - 48) * 100;
}
else {
result = (inputItem - 48) * 100;
}
}
if (result > 5000){
printf("取款限额为5000");
result = 0;
}
printf("\n%d", result);
}
return result;
}
int SelectMoney(){
int result = 100;
char inputItem = '\0';
char MoneyItem[][20] = { "100", "200", "500", "1000", "输入金额" };
showMenu(MoneyItem, 5);
while ((inputItem = _getch()) >='1'&&inputItem<='5')
{
switch (inputItem)
{
case '1':
return 100;
break;
case '2':
return 200;
break;
case '3':
return 500;
break;
case '4':
return 1000;
break;
case '5':
return InputMoney();
break;
default:
printf("请输入正确选项\n");
}
}
}
bool OperationMenu(){
char input_seletor = '\0';
int Money = 0;
struct User *temp = (struct User *)malloc(sizeof(struct User));
char newPassword[7] = { '\0' };
char confirmpassword[7] = { '\0' };
char LoginMenu[][20] = { "取款", "存款", "查询余额", "修改密码" ,"退卡"};
showMenu(LoginMenu, 5);
while ((input_seletor = _getch()) >= '1'&&input_seletor <= '5')
{
switch (input_seletor)
{
case '1':
Money = SelectMoney();
WithDraw(Money);
break;
case '2':
Money = SelectMoney();
Deposit(Money);
break;
case '3':
system("cls");
printf("当前余额：%d\n按任意键返回", Current_user->Money);
break;
case '4':
system("cls");
InputPassword(Current_user->UserAccount, newPassword);
system("cls");
printf("再次输入以确认密码\n,按任意键继续输入");
_getch();
InputPassword(Current_user->UserAccount, confirmpassword);
if (checkPassword(newPassword, confirmpassword)){
for (int i = 0; Current_user->UserPassword[i] != '\0';i++){
Current_user->UserPassword[i] = newPassword[i];
}
printf("%s %s ",newPassword,confirmpassword);
printf("\n密码修改成功！");
}
else{
system("cls");
printf("两次密码输入不一致");
}
break;
case '5':
return true;
break;
default:
break;
}
_getch();
break;
}
OperationMenu();
}
void startATM(){
FILE *fp = NULL;
char path[] = "C:\\Users\\user\\Desktop\\Account.txt";
initdata(fp, path);//初始化数据
int Islogin = 0;
char input_seletor = '\0';
char UserAccount[100] = { '\0' };
char UserPwd[100] = { '\0' };
char InputPwd[100] = { '\0' };
InputAccount(UserAccount);
//strcpy_s(UserAccount, "6210300022352527");
if (checkAccount(UserAccount, Current_user)){
while (Islogin<=2){
InputPassword(UserAccount, InputPwd);
//strcpy_s(InputPwd, "132132");
if (checkPassword(Current_user->UserPassword, InputPwd)){
printf("login successful\n");
if (OperationMenu()){
break;
}
Islogin = 0;
}
else{
Islogin++;
printf("password error");
}
}
if (Islogin >= 2){
system("cls");
printf("密码三次输入错误，吞卡\n");
}
else{
writeIntoFIle(fp,path);
system("cls");
printf("数据保存成功");
}
}
_getch();
}
int main(){
startATM();
return 0;
}
C语言 实现ATM系统
声明：以上内容来自用户投稿及互联网公开渠道收集整理发布，本网站不拥有所有权，未作人工编辑处理，也不承担相关法律责任，若内容有误或涉及侵权可进行投诉： 投诉/举报 工作人员会在5个工作日内联系你，一经查实，本站将立刻删除涉嫌侵权内容。