passwordchar(怎么用C語言實現銀行系統)

main.c

#include<stdio.h>#include<stdlib.h>#include<string.h>#include<conio.h>#include<windows.h>#defineMaxNum200#defineN_P6typedefstruct{intAccountNumber[3];charname[20];charpassword[N_P+1];unsignedlongamount;intstate;}Account;voidLoad(FILE*,Account*);voidShowMenu(int);intMakeChoice(int);voidEnterPassword(char*);voidCreatAccount(unsignedchar*,Account*,int);//第一個參數為加密關鍵字,第二個參數為賬戶序號intJudgePassword(char*,char*);intdecrypt(int*,unsignedchar*);voidLogIn(unsignedchar*,Account*,int);//第二個參數為當前賬戶數目,登陸成功返回1,失敗返回0intEnterAccountNumber(unsignedchar*,int);voidEnterNum(char*,int);voidOperate(unsignedchar*,Account*,int,int);voidShowSubMenu(char*);voidAdministratorMode(unsignedchar*,unsignedchar*,Account*,char*,int);voidShowAdministratorMenu();voidWriteToFile(FILE*,unsignedchar*,Account*,char*,int);intmain(){FILE*fp;inti,total;unsignedcharkey[4],key_en[4];charadministrator_password[10];Account*user;user=(Account*)malloc(sizeof(Account)*MaxNum);fp=fopen("bank.txt","r+");if(fp==NULL){printf("銀行數據庫無法打開,按任意鍵結束程序!\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);//將數據存入數組user中while(1){system("cls");ShowMenu(total);switch(MakeChoice(4)){case1:system("cls");LogIn(key_en,user,total);break;case2:system("cls");CreatAccount(key_en,user,total++);break;case3:system("cls");AdministratorMode(key,key_en,user,administrator_password,total);break;default:system("cls");WriteToFile(fp,key,user,administrator_password,total);return0;}}return0;}

function.c

#include<stdio.h>#include<stdlib.h>#include<string.h>#include<conio.h>#include<windows.h>#defineMaxNum200#defineN_P6//賬戶狀態0為正常1為掛失2為凍結3為銷戶typedefstruct{intAccountNumber[3];charname[20];charpassword[N_P];unsignedlongamount;intstate;}Account;voidLoad(FILE*,Account*);voidShowMenu(int);intMakeChoice(int);voidEnterPassword(char*);voidCreatAccount(unsignedchar*,Account*,int);//第一個參數為加密關鍵字,第二個參數為賬戶序號intJudgePassword(char*,char*);intdecrypt(int*,unsignedchar*);voidLogIn(unsignedchar*,Account*,int);//第二個參數為當前賬戶數目,登陸成功返回1,失敗返回0intEnterAccountNumber(unsignedchar*,int);voidEnterNum(char*,int);voidOperate(unsignedchar*,Account*,int,int);voidShowSubMenu(char*);voidAdministratorMode(unsignedchar*,unsignedchar*,Account*,char*,int);voidShowAdministratorMenu();voidWriteToFile(FILE*,unsignedchar*,Account*,char*,int);voidLoad(FILE*fp,Account*user){intcount=0;//將文件中的用戶信息存到數組中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;}voidShowMenu(inttotal){printf("****中國銀行煙大計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.進入管理員模式***************\n");printf("4.退出*************************\n");}intMakeChoice(intn){intjudge;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,輸入一些字母會導致函數無限循環scanf("%d",&judge);}returnjudge;}voidEnterPassword(char*password){inti;chart;for(i=0;i<N_P;++i){t=getch();if(t=='\b')//執行退格刪除操作{printf("\b\b");i-=2;continue;}while(t<'0'||t>'9')t=getch();password[i]=t;putchar('*');}}voidEnterNum(char*s,intn){inti=0;chart;while(i<n){t=getch();if(t=='\b'){printf("\b\b");--i;continue;}elseif(t=='\r'||t=='\n')break;while(t<'0'||t>'9')t=getch();s[i]=t;putchar(t);++i;}}intJudgePassword(char*temp_password,char*password){inti;for(i=0;i<N_P;++i){if(temp_password[i]!=password[i])break;}if(i==N_P)return0;elsereturn1;}voidCreatAccount(unsignedchar*key,Account*user,intnum){if(num>=MaxNum){printf("銀行用戶數量已達到上限!\n按任意鍵返回主界面");getch();return;}inti,flag,num_de[3];intnum_en[3];chartemp_password[N_P],password[N_P];//將num的個位十位和百位分解,num_de[2]存個位,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;elseif(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請設置密碼:");EnterPassword(password);printf("\n請再次確認密碼:");EnterPassword(temp_password);if(JudgePassword(temp_password,password))printf("\n兩次輸入不相等,密碼設置失敗!");else{strcpy(user[num].password,password);user[num].password[N_P]='\0';break;}}user[num].amount=0;user[num].state=0;printf("\n賬戶創建成功!\n按任意鍵返回主菜單");getch();}intdecrypt(int*num_en,unsignedchar*key){inti,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];returnnum;}intEnterAccountNumber(unsignedchar*key,inttotal){inti,num;intnum_en[3];charnum_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");elsebreak;}returnnum;}voidLogIn(unsignedchar*key,Account*user,inttotal){intnum,i;charpassword[N_P];num=EnterAccountNumber(key,total);//判斷賬戶狀態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;}elseif(user[num].state==2){printf("該賬戶因輸入密碼錯誤次數達三次,已凍結!\n請進入管理員模式解除異常狀態!\n");printf("按任意鍵返回操作界面");getch();return;}//判斷結束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次機會\n",3-i);elseif(i>=3){user[num].state=2;printf("\n密碼錯誤次數過多,賬戶已凍結!\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);}voidShowSubMenu(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");}voidOperate(unsignedchar*key,Account*user,intnum,inttotal){inti,num_t;unsignedlongamount_t,max=1;charpassword[N_P],temp_password[N_P],amount_judge[6];for(i=0;i<(sizeof(unsignedlong)*8-1);++i)//計算最大存款額maxmax*=2;while(1){system("cls");ShowSubMenu(user[num].name);switch(MakeChoice(8)){case1: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,存款失敗!\n");elseif(amount_t>=max-user[num].amount)printf("總金額超出上限,存款失敗!\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;case2:system("cls");if(user[num].state==1){printf("該賬戶已掛失,無法執行取款操作!\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");elseif(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;case3: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:");if(user[num].state==1)printf("已掛失\n");elseprintf("正常\n");printf("按任意鍵返回操作界面");getch();system("cls");break;case4:system("cls");if(user[num].state==1){printf("該賬戶已掛失,無法執行轉賬操作!\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");elseif(amount_t>user[num].amount)printf("賬戶金額不足,轉賬失敗!\n");elseif(amount_t>=max-user[num_t].amount)printf("\n對方總金額超出上限,轉賬失敗!\n");else{user[num].amount-=amount_t;user[num_t].amount+=amount_t;printf("\n轉賬成功!按任意鍵返回操作界面");getch();system("cls");break;}}break;case5: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;case6:system("cls");printf("您確定要銷戶嗎?銷戶后所有功能都將無法實現,賬戶內的存款將凍結!\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;}elsebreak;case7: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");elsebreak;}while(1){printf("\n請輸入新密碼:");EnterPassword(password);printf("\n請再次確認密碼:");EnterPassword(temp_password);if(JudgePassword(temp_password,password))printf("\n兩次輸入不相等,密碼設置失敗!");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;}}}voidAdministratorMode(unsignedchar*key_orig,unsignedchar*key,Account*user,char*administrator_password,inttotal){intnum;charpassword[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");elsebreak;}printf("\n登陸成功!按任意鍵繼續");getch();while(1){system("cls");ShowAdministratorMenu();switch(MakeChoice(6)){case1:system("cls");num=EnterAccountNumber(key,total);printf("請設置密碼:");EnterPassword(password);printf("您設置的密碼是:");puts(user[num].password);printf("\n按任意鍵返回操作界面");getch();break;case2:system("cls");num=EnterAccountNumber(key,total);printf("您確定要解除此用戶的掛失狀態嗎?\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;case3:system("cls");num=EnterAccountNumber(key,total);printf("\n您確定要解除此用戶的凍結狀態嗎?\n");printf("1.確定2.取消\n");if(MakeChoice(2)==1){user[num].state=0;printf("解除凍結成功!\n按任意鍵返回主界面");getch();}break;case4:system("cls");while(1){printf("請輸入新密碼:");EnterPassword(password);printf("\n請再次確認密碼:");EnterPassword(temp_password);if(JudgePassword(temp_password,password))printf("\n兩次輸入不相等,密碼設置失敗!\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;case5:system("cls");printf("當前的賬號生成關鍵字為“%s”,更改之后所有之前創建的賬戶將無法打開!\n",key_orig);printf("您確定要更改賬號生成關鍵字嗎?\n");printf("1.確定2.取消\n");if(MakeChoice(2)==1){printf("請輸入新的關鍵字:");scanf("%3s",key_orig);printf("當前的關鍵字已更改為“%s”\n按任意鍵返回操作界面",key_orig);getch();}break;default:return;}}}voidShowAdministratorMenu(){printf("****中國銀行煙大計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*********************\n");printf("4.修改管理員密碼***************\n");printf("5.修改賬號生成關鍵字***********\n");printf("6.返回主界面*******************\n");}voidWriteToFile(FILE*fp,unsignedchar*key,Account*user,char*administrator_password,inttotal){inti,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);}

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