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這篇文章主要介紹“怎么用C語言實(shí)現(xiàn)銀行系統(tǒng)”,在日常操作中,相信很多人在怎么用C語言實(shí)現(xiàn)銀行系統(tǒng)問題上存在疑惑,小編查閱了各式資料,整理出簡單好用的操作方法,希望對大家解答”怎么用C語言實(shí)現(xiàn)銀行系統(tǒng)”的疑惑有所幫助!接下來,請跟著小編一起來學(xué)習(xí)吧!
main.c
#include <stdio.h> #include <stdlib.h> #include <string.h> #include <conio.h> #include <windows.h> #define MaxNum 200 #define N_P 6 typedef struct { int AccountNumber[3]; char name[20]; char password[N_P+1]; unsigned long amount; int state; } Account; void Load(FILE *,Account *); void ShowMenu(int ); int MakeChoice(int ); void EnterPassword(char *); void CreatAccount(unsigned char *,Account *,int); //第一個參數(shù)為加密關(guān)鍵字,第二個參數(shù)為賬戶序號 int JudgePassword(char *,char *); int decrypt(int *,unsigned char *); void LogIn(unsigned char *,Account *,int); //第二個參數(shù)為當(dāng)前賬戶數(shù)目,登陸成功返回1,失敗返回0 int EnterAccountNumber(unsigned char *,int ); void EnterNum(char *,int ); void Operate(unsigned char *,Account *,int ,int ); void ShowSubMenu(char *); void AdministratorMode(unsigned char *,unsigned char *,Account *,char *,int); void ShowAdministratorMenu(); void WriteToFile(FILE *,unsigned char *,Account*,char *,int); int main() { FILE *fp; int i,total; unsigned char key[4],key_en[4]; char administrator_password[10]; Account *user; user=(Account *)malloc(sizeof(Account)*MaxNum); fp=fopen("bank.txt","r+"); if(fp==NULL) { printf("銀行數(shù)據(jù)庫無法打開,按任意鍵結(jié)束程序!\n"); getch(); exit(1); } fscanf(fp,"%d\n%s\n%s",&total,administrator_password,key); for(i=0;i<3;++i)//用key_en保存key的值 key_en[i]=key[i]; key_en[0]=(key_en[0]<<3)|(key_en[0]>>(sizeof(key_en[0])*8-3)); key_en[2]=(key_en[2]>>3)|(key_en[2]<<(sizeof(key_en[2])*8-3)); Load(fp,user);//將數(shù)據(jù)存入數(shù)組user中 while(1) { system("cls"); ShowMenu(total); switch(MakeChoice(4)) { case 1: system("cls"); LogIn(key_en,user,total); break; case 2: system("cls"); CreatAccount(key_en,user,total++); break; case 3: system("cls"); AdministratorMode(key,key_en,user,administrator_password,total); break; default: system("cls"); WriteToFile(fp,key,user,administrator_password,total); return 0; } } return 0; }
function.c
#include <stdio.h> #include <stdlib.h> #include <string.h> #include <conio.h> #include <windows.h> #define MaxNum 200 #define N_P 6 //賬戶狀態(tài) 0為正常 1為掛失 2為凍結(jié) 3為銷戶 typedef struct { int AccountNumber[3]; char name[20]; char password[N_P]; unsigned long amount; int state; } Account; void Load(FILE *,Account *); void ShowMenu(int ); int MakeChoice(int ); void EnterPassword(char *); void CreatAccount(unsigned char *,Account *,int); //第一個參數(shù)為加密關(guān)鍵字,第二個參數(shù)為賬戶序號 int JudgePassword(char *,char *); int decrypt(int *,unsigned char *); void LogIn(unsigned char *,Account *,int); //第二個參數(shù)為當(dāng)前賬戶數(shù)目,登陸成功返回1,失敗返回0 int EnterAccountNumber(unsigned char *,int ); void EnterNum(char *,int ); void Operate(unsigned char *,Account *,int,int ); void ShowSubMenu(char *); void AdministratorMode(unsigned char *,unsigned char *,Account *,char *,int); void ShowAdministratorMenu(); void WriteToFile(FILE *,unsigned char *,Account*,char *,int); void Load(FILE *fp,Account *user) { int count=0; //將文件中的用戶信息存到數(shù)組中 while(fscanf(fp,"\n%d%d%d %s %s %lu %d\n",&user[count].AccountNumber[0],&user[count].AccountNumber[1],\ &user[count].AccountNumber[2],user[count].name,\ user[count].password,&user[count].amount,&user[count].state)!=EOF) ++count; } void ShowMenu(int total) { printf("****中國銀行煙大計(jì)163-1分行****\n"); printf("目前共有%d名注冊用戶*****\n",total); printf("1.登陸*************************\n"); printf("2.開戶*************************\n"); printf("3.進(jìn)入管理員模式***************\n"); printf("4.退出*************************\n"); } int MakeChoice(int n) { int judge; printf("請輸入1~%d\n",n); scanf("%d",&judge); while(judge<1||judge>n)//確保輸入的是1~n { printf("輸入不合法,請輸入1~%d\n",n); fflush(stdin);//如果不加這句,輸入一些字母會導(dǎo)致函數(shù)無限循環(huán) scanf("%d",&judge); } return judge; } void EnterPassword(char *password) { int i; char t; for(i=0; i<N_P; ++i) { t=getch(); if(t=='\b')//執(zhí)行退格刪除操作 { printf("\b \b"); i-=2; continue; } while(t<'0'||t>'9') t=getch(); password[i]=t; putchar('*'); } } void EnterNum(char *s,int n) { int i=0; char t; while(i<n) { t=getch(); if(t=='\b') { printf("\b \b"); --i; continue; } else if(t=='\r'||t=='\n') break; while(t<'0'||t>'9') t=getch(); s[i]=t; putchar(t); ++i; } } int JudgePassword(char *temp_password,char *password) { int i; for(i=0; i<N_P; ++i) { if(temp_password[i]!=password[i]) break; } if(i==N_P) return 0; else return 1; } void CreatAccount(unsigned char *key,Account *user,int num) { if(num>=MaxNum) { printf("銀行用戶數(shù)量已達(dá)到上限!\n按任意鍵返回主界面"); getch(); return; } int i,flag,num_de[3]; int num_en[3]; char temp_password[N_P],password[N_P]; //將num的個位十位和百位分解,num_de[2]存?zhèn)€位,以此類推 for(i=0; i<3; ++i) num_de[i]=0; for(i=0; i<3; ++i) num_en[i]=0; if(num<10) num_de[2]=num; else if(num<100) { num_de[2]=num%10; num_de[1]=num/10; } else { for(i=0; i<3; ++i) { num_de[i]=num%10; num/=10; } } //分解完成 while(1) { flag=0; printf("請輸入用戶姓名:"); fflush(stdin); scanf("%19[^\n]",user[num].name); for(i=0; i<strlen(user[num].name); ++i) { if(user[num].name[i]==' ') { printf("用戶名中不能包含空格!\n"); flag=1; break; } } if(flag==0) break; } for(i=0; i<3; ++i) num_en[i]=num_de[i]^key[i]; for(i=0; i<3; ++i) user[num].AccountNumber[i]=num_en[i]; printf("您的賬號是:"); for(i=0; i<3; ++i) printf("%03d ",num_en[i]); while(1) { printf("\n請?jiān)O(shè)置密碼:"); EnterPassword(password); printf("\n請?jiān)俅未_認(rèn)密碼:"); EnterPassword(temp_password); if(JudgePassword(temp_password,password)) printf("\n兩次輸入不相等,密碼設(shè)置失敗!"); else { strcpy(user[num].password,password); user[num].password[N_P]='\0'; break; } } user[num].amount=0; user[num].state=0; printf("\n賬戶創(chuàng)建成功!\n按任意鍵返回主菜單"); getch(); } int decrypt(int *num_en,unsigned char *key) { int i,num,num_de[3]; for(i=0; i<3; ++i) num_de[i]=num_en[i]^key[i]; num=num_de[0]*100+num_de[1]*10+num_de[2]; return num; } int EnterAccountNumber(unsigned char *key,int total) { int i,num; int num_en[3]; char num_en_char[3]; while(1)//輸入賬號 { printf("請輸入賬號:"); for(i=0;i<3;++i) { EnterNum(num_en_char,3); num_en[i]=atoi(num_en_char); } num=decrypt(num_en,key); if(num>total)//若num大于total則賬號輸入錯誤 printf("\n賬號輸入錯誤!\n"); else break; } return num; } void LogIn(unsigned char *key,Account *user,int total) { int num,i; char password[N_P]; num=EnterAccountNumber(key,total); //判斷賬戶狀態(tài) if(user[num].state==3) { printf("該賬戶已銷戶,無法使用!\n"); printf("按任意鍵返回操作界面"); getch(); return; } else if(user[num].state==2) { printf("該賬戶因輸入密碼錯誤次數(shù)達(dá)三次,已凍結(jié)!\n請進(jìn)入管理員模式解除異常狀態(tài)!\n"); printf("按任意鍵返回操作界面"); getch(); return; } //判斷結(jié)束 i=0; while(1)//輸入密碼 { printf("\n請輸入密碼:"); EnterPassword(password); if(JudgePassword(password,user[num].password)&&(++i<3)) printf("\n密碼輸入錯誤,您還有%d次機(jī)會\n",3-i); else if(i>=3) { user[num].state=2; printf("\n密碼錯誤次數(shù)過多,賬戶已凍結(jié)!\n"); printf("即將返回主界面 "); for(i=0; i<3; ++i) { printf("%d",i); Sleep(1000); printf("\b"); } return ; } else { printf("登陸成功!\n"); break; } } Operate(key,user,num,total); } void ShowSubMenu(char *name) { printf("****歡迎%s登陸本行********\n",name); printf("1.存款*************************\n"); printf("2.取款*************************\n"); printf("3.查詢*************************\n"); printf("4.轉(zhuǎn)賬*************************\n"); printf("5.掛失*************************\n"); printf("6.銷戶*************************\n"); printf("7.改密*************************\n"); printf("8.返回主菜單*******************\n"); } void Operate(unsigned char *key,Account *user,int num,int total) { int i,num_t; unsigned long amount_t,max=1; char password[N_P],temp_password[N_P],amount_judge[6]; for(i=0; i<(sizeof(unsigned long)*8-1); ++i) //計(jì)算最大存款額max max*=2; while(1) { system("cls"); ShowSubMenu(user[num].name); switch(MakeChoice(8)) { case 1: system("cls"); while(1) { printf("請輸入存款金額:"); for(i=0;i<6;++i) amount_judge[i]='\0'; EnterNum(amount_judge,5); amount_t=atol(amount_judge); if(amount_t>99999) printf("\n單次存款金額為0~99999元,存款失??!\n"); else if(amount_t>=max-user[num].amount) printf("總金額超出上限,存款失??!\n"); else { user[num].amount+=amount_t; printf("\n存款成功!按任意鍵返回操作界面"); getch(); system("cls"); break; } } break; case 2: system("cls"); if(user[num].state==1) { printf("該賬戶已掛失,無法執(zhí)行取款操作!\n"); printf("按任意鍵返回操作界面"); getch(); break; } while(1) { printf("請輸入取款金額:"); for(i=0;i<6;++i) amount_judge[i]='\0'; EnterNum(amount_judge,5); amount_t=atol(amount_judge); if(amount_t>99999) printf("\n單次存款金額為0~99999元,存款失敗!\n"); else if(amount_t>user[num].amount) printf("\n賬戶余額不足,取款失敗!\n"); else { user[num].amount-=amount_t; printf("\n取款成功!按任意鍵返回操作界面"); getch(); system("cls"); break; } } break; case 3: system("cls"); printf("用戶姓名:%s",user[num].name); printf("賬戶余額:%lu\n",user[num].amount); printf("賬戶狀態(tài):"); if(user[num].state==1) printf("已掛失\n"); else printf("正常\n"); printf("按任意鍵返回操作界面"); getch(); system("cls"); break; case 4: system("cls"); if(user[num].state==1) { printf("該賬戶已掛失,無法執(zhí)行轉(zhuǎn)賬操作!\n"); printf("按任意鍵返回操作界面"); getch(); break; } num_t=EnterAccountNumber(key,total); while(1) { printf("請輸入轉(zhuǎn)賬金額:"); for(i=0;i<6;++i) amount_judge[i]='\0'; EnterNum(amount_judge,5); amount_t=atol(amount_judge); if(amount_t>99999) printf("\n單次存款金額為0~99999元,存款失敗!\n"); else if(amount_t>user[num].amount) printf("賬戶金額不足,轉(zhuǎn)賬失敗!\n"); else if(amount_t>=max-user[num_t].amount) printf("\n對方總金額超出上限,轉(zhuǎn)賬失?。n"); else { user[num].amount-=amount_t; user[num_t].amount+=amount_t; printf("\n轉(zhuǎn)賬成功!按任意鍵返回操作界面"); getch(); system("cls"); break; } } break; case 5: system("cls"); printf("您確定要掛失嗎?\n"); printf("1.確定 2.取消\n"); if(MakeChoice(2)==1) { user[num].state=1; printf("掛失成功!\n按任意鍵返回主界面"); getch(); } system("cls"); break; case 6: system("cls"); printf("您確定要銷戶嗎?銷戶后所有功能都將無法實(shí)現(xiàn),賬戶內(nèi)的存款將凍結(jié)!\n"); printf("1.確定 2.取消\n"); if(MakeChoice(2)==1) { user[num].state=3; printf("銷戶成功!\n按任意鍵返回主界面"); getch(); system("cls"); return; } else break; case 7: system("cls"); while(1) { printf("\n請輸入原密碼:"); EnterPassword(password); if(JudgePassword(password,user[num].password)) printf("\n原密碼輸入錯誤!\n"); else break; } while(1) { printf("\n請輸入新密碼:"); EnterPassword(password); printf("\n請?jiān)俅未_認(rèn)密碼:"); EnterPassword(temp_password); if(JudgePassword(temp_password,password)) printf("\n兩次輸入不相等,密碼設(shè)置失?。?quot;); else { strcpy(user[num].password,password); break; } } printf("\n密碼修改成功!\n按任意鍵返回操作界面"); getch(); system("cls"); break; default: return; } } } void AdministratorMode(unsigned char *key_orig,unsigned char *key,Account *user,char *administrator_password,int total) { int num; char password[N_P],temp_password[N_P]; while(1)//輸入密碼 { printf("請輸入管理員密碼密碼:"); EnterPassword(password); if(JudgePassword(password,administrator_password)) printf("密碼輸入錯誤!\n"); else break; } printf("\n登陸成功!按任意鍵繼續(xù)"); getch(); while(1) { system("cls"); ShowAdministratorMenu(); switch(MakeChoice(6)) { case 1: system("cls"); num=EnterAccountNumber(key,total); printf("請?jiān)O(shè)置密碼:"); EnterPassword(password); printf("您設(shè)置的密碼是:"); puts(user[num].password); printf("\n按任意鍵返回操作界面"); getch(); break; case 2: system("cls"); num=EnterAccountNumber(key,total); printf("您確定要解除此用戶的掛失狀態(tài)嗎?\n"); printf("1.確定 2.取消\n"); if(MakeChoice(2)==1) { user[num].state=0; printf("解除掛失成功!\n按任意鍵返回主界面"); getch(); } break; case 3: system("cls"); num=EnterAccountNumber(key,total); printf("\n您確定要解除此用戶的凍結(jié)狀態(tài)嗎?\n"); printf("1.確定 2.取消\n"); if(MakeChoice(2)==1) { user[num].state=0; printf("解除凍結(jié)成功!\n按任意鍵返回主界面"); getch(); } break; case 4: system("cls"); while(1) { printf("請輸入新密碼:"); EnterPassword(password); printf("\n請?jiān)俅未_認(rèn)密碼:"); EnterPassword(temp_password); if(JudgePassword(temp_password,password)) printf("\n兩次輸入不相等,密碼設(shè)置失敗!\n"); else { strcpy(administrator_password,password); break; } } printf("\n管理員密碼修改成功!\n按任意鍵返回操作界面"); getch(); break; case 5: system("cls"); printf("當(dāng)前的賬號生成關(guān)鍵字為“%s”,更改之后所有之前創(chuàng)建的賬戶將無法打開!\n",key_orig); printf("您確定要更改賬號生成關(guān)鍵字嗎?\n"); printf("1.確定 2.取消\n"); if(MakeChoice(2)==1) { printf("請輸入新的關(guān)鍵字:"); scanf("%3s",key_orig); printf("當(dāng)前的關(guān)鍵字已更改為“%s”\n按任意鍵返回操作界面",key_orig); getch(); } break; default: return; } } } void ShowAdministratorMenu() { printf("****中國銀行煙大計(jì)163-1分行****\n"); printf("**********管理員模式***********\n"); printf("1.修改用戶密碼*****************\n"); printf("2.解除掛失*********************\n"); printf("3.解除凍結(jié)*********************\n"); printf("4.修改管理員密碼***************\n"); printf("5.修改賬號生成關(guān)鍵字***********\n"); printf("6.返回主界面*******************\n"); } void WriteToFile(FILE *fp,unsigned char *key,Account *user,char *administrator_password,int total) { int i,j; rewind(fp); fprintf(fp,"%d\n%6s\n%3s\n",total,administrator_password,key); for(i=0; i<total; ++i) { for(j=0; j<3; ++j) fprintf(fp,"%03d ",user[i].AccountNumber[j]); fprintf(fp,"%s %6s %lu %d\n",user[i].name,user[i].password,\ user[i].amount,user[i].state); } fclose(fp); }
到此,關(guān)于“怎么用C語言實(shí)現(xiàn)銀行系統(tǒng)”的學(xué)習(xí)就結(jié)束了,希望能夠解決大家的疑惑。理論與實(shí)踐的搭配能更好的幫助大家學(xué)習(xí),快去試試吧!若想繼續(xù)學(xué)習(xí)更多相關(guān)知識,請繼續(xù)關(guān)注億速云網(wǎng)站,小編會繼續(xù)努力為大家?guī)砀鄬?shí)用的文章!
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