银行c语言代码,银行管理系统C语言

发布时间：2022-12-01

本文目录一览：

  1. 怎样编写 c语言 银行账户信息管理系统
  2. C语言设计银行账户模拟程序
  3. 编写一个C语言程序模拟银行ATM机的账户管理功能，系统主要实现以下功能
  4. c语言银行程序
  5. 有关银行贷款还贷的c语言程序
  6. c语言 银行贷款的月利率 简单代码

怎样编写 c语言 银行账户信息管理系统

参考如下：

#include conio.h
#include string.h
#include stdio.h
#include stdlib.h
char cFile[] = "date.txt";
struct bank
{
    char id[10+1];
    char psw[6+1];
    double money;
};
welcome1()
{
    printf("\n\n\t\t欢迎使用虚拟银行自动取款机服务!\t\t\n\n");    
    printf("请选择功能：\n");    
    printf("\n=================================================\n");    
    printf(" ||            请输入序号               ||\n");    
    printf(" ||            1.新用户开户。           ||\n");    
    printf(" ||            2.老用户登陆。           ||\n");    
    printf(" ||            3.退出系统。             ||\n");    
    printf("=================================================\n");    
}
welcome2()
{
    printf("\n\n\t\t注册须知\n\n");
    printf("**************************************************\n");
    printf("*            1.请填写您的真实资料!               *\n");
    printf("*            2.开户首期必须存入100元以上        *\n");
    printf("**************************************************\n");
}
welcome3()
{
    printf("\n\n\t\t\3 欢迎进入虚拟银行系统 \3\n\n");
    printf("\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\n");
    printf("\1\1\t 请选择功能:1.取款(最多透资2000);        \1\1\n");
    printf("\1\1\t           2.存款;                      \1\1\n");
    printf("\1\1\t           3.查询余额;                  \1\1\n");
    printf("\1\1\t           4.修改密码;                  \1\1\n");
    printf("\1\1\t           5.返回主页面;                \1\1\n");
    printf("\1\1\t           任意键退出.                  \1\1\n");
    printf("\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\n");
}
int search(char* user, char* pwd, char* real_pwd)/*判断帐号是否相同，不相同返回1*/
{
    FILE* file;
    char user_buff[256], pwd_buff[256];
    file = fopen(cFile, "r");
    if (!file) return 0;
    while (!feof(file))
    {    
        if (fscanf(file, "%s%s\n", user_buff, pwd_buff) == EOF) return 0;
        if (!strcmp(user_buff, user))
        {
            if (real_pwd) strcpy(real_pwd, pwd_buff);
            return 1;
        }
    }
    fclose(file);
    return 0;
}
int add(char* user, char* pwd, double coin_n)
{
    FILE* file;
    file = fopen(cFile, "a");
    if (!file) return 0;
    fprintf(file, "%s %s %.2lf\n", user, pwd, coin_n);
    fclose(file);
    return 0;
}
int wenjian(char* user, char* pwd,double coin)
{
    if (search(user, pwd, NULL)) return 0;
    else add(user, pwd, coin);
    return 1;
}
zhuce()/*注册*/ 
{
    struct bank *p; 
    int i=0,k=0,judge1,judge2;
    char name[30];
    char sex,ch;
    char sh[18];
    int n;
    p=(struct bank*)malloc(sizeof(struct bank));/*给p分配内存*/
    welcome2();
    printf("请输入您的名字(纯英文):");
    gets(name);
    printf("请输入您的性别(男:1 女2):");
    fflush(stdin); 
    scanf("%c",sex); 
    fflush(stdin); 
    printf("请输入您的身份证号码:");
    gets(sh);
    for(n=0;n<strlen(name);n++)/*判断输入信息是否正确*/
    {
        if(name[n]>='0' && name[n]<='9')
        { 
            printf("您输入的名字有误!\n");
            printf("\n请选择:按1返回主页面. 按任意键退出:");
            fflush(stdin);
            scanf("%c",ch);
            fflush(stdin);
            if(ch=='1'){system("cls");main();}
            else exit(0);
        }
    }
    if(sex!='1' && sex!='2')/*判断输入信息是否正确*/
    {
        printf("您输入的性别不对!\n");
        printf("\n请选择:按1返回主页面. 按任意键退出:");
        fflush(stdin);
        scanf("%c",ch);
        fflush(stdin);
        if(ch=='1'){system("cls");main();}
        else exit(0);
    }
    if(strlen(sh)!=18)/*判断输入信息是否正确*/
    { 
        printf("您输入的身份证号码不全!\n");
        printf("\n请选择:按1返回主页面. 按任意键退出:");
        fflush(stdin);
        scanf("%c",ch);
        fflush(stdin);
        if(ch=='1'){system("cls");main();}
        else exit(0);
    }
    for(n=0;n<strlen(sh)-1;n++)/*判断输入信息是否正确*/
    {
        if(sh[n]<'0' || sh[n]>'9')
        {
            printf("您输入的身份证号码非法!\n");
            printf("\n请选择:按1返回主页面. 按任意键退出:");
            fflush(stdin);
            scanf("%c",ch);
            fflush(stdin);
            if(ch=='1'){system("cls");main();}
            else exit(0);
        }
        else
        {
            if(sh[18]!='x' && sh[18]<'0' && sh[18]>'9')
            {
                printf("您输入的身份证号码非法!\n");
                printf("\n请选择:按1返回主页面. 按任意键退出:");
                fflush(stdin);
                scanf("%c",ch);
                fflush(stdin);
                if(ch=='1'){system("cls");main();}
                else exit(0);
            }
        }
    } 
    printf("请输入您的帐号(10位纯数字):\n"); 
    fflush(stdin);
    scanf("%s",p->id);
    fflush(stdin); 
    while(i < strlen(p->id)) 
    { 
        if((p->id[i] >= '0') && (p->id[i] <= '9')) 
        { 
            judge1=0; 
        } 
        i++; 
    } 
    while(strlen(p->id)!=10 || judge1==0)/*判断帐号的正确性*/ 
    { 
        printf("您输入的帐号不正确，必须为10位纯数字！"); 
        printf("请重新输入(10位纯数字)："); 
        fflush(stdin);
        scanf("%s",p->id);
        fflush(stdin); 
    } 
    printf("请输入您的密码(6位纯数字)：\n"); 
    fflush(stdin); 
    scanf("%s",p->psw);
    fflush(stdin);
    while(k < strlen(p->psw)) 
    { 
        if((p->psw[k] >= '0') && (p->psw[k] <= '9')) 
        { 
            judge2=0; 
        } 
        k++; 
    } 
    while(strlen(p->psw)!=6 || judge2==0)/*判断密码形式的正确性*/ 
    { 
        printf("您输入不正确!密码必须为6位纯数字!\n"); 
        printf("请重新输入密码(6位纯数字)："); 
        fflush(stdin); 
        scanf("%s",p->psw);
        fflush(stdin);
    } 
    printf("请输入您的首期存款:");
    fflush(stdin);
    scanf("%lf",&p->money);
    fflush(stdin);
    while((p->money)<100)
    {
        printf("您必须存入100元以上,请重新输入:");
        fflush(stdin);
        scanf("%lf",&p->money);
        fflush(stdin);
    }
    if (wenjian(p->id,p->psw,p->money))/*存入文件并输出基本信息*/
    {   
        system("cls");
        printf("注册成功!");
        printf("您的注册信息如下,请牢记:\n");
        printf("名字:");
        puts(name);
        printf("性别代码:%c\n",sex);
        printf("身份证号码:");
        puts(sh);
        printf("帐号:");
        puts(p->id);
        printf("密码:");
        puts(p->psw);
        printf("您帐户里的余额为:%.2lf\n",p->money);
        printf("请选择:按1返回主页面. 按任意键退出:");
        fflush(stdin);
        scanf("%c",ch);
        fflush(stdin);
        if(ch=='1'){system("cls");main();}
        else exit(0);
    }
    else/*如有相同帐号，注册失败*/
    {
        system("cls"); 
        printf("您输入的帐号已经存在!注册失败!\n");
        printf("请选择:按1返回主页面. 按任意键退出:");
        scanf("%c",ch);
        if(ch=='1'){system("cls");main();}
        else exit(0);
    }
}
gongneng(char Account[10+1],char Password[6+1],double Money)/*登陆成功后的功能界面*/
{
    FILE *ps;
    struct bank xin[1000];
    int k=0,b=0;
    char mima[6+1],Chiose,x;
    char count[10+1],word[6+1];
    double inmoney,outmoney,addmoney;
    welcome3();
    fflush(stdin);
    scanf("%c",&Chiose);
    fflush(stdin);
    ps=fopen(cFile,"r");
    if (!ps) 
    {
        printf("不能打开文件!按任意键退出!");
        fflush(stdin);
        scanf("%c",&x);
        fflush(stdin);
        exit(0); 
    }
    if(Chiose=='1')
    {
        printf("输入您的取款金额:");
        fflush(stdin);
        scanf("%lf",&outmoney);
        fflush(stdin);
        while(!feof(ps))
        {
            fscanf(ps, "%s %s %lf",xin[k].id,xin[k].psw,&xin[k].money);
            k++;
        }
        fclose(ps);
        ps=fopen(cFile,"wb");
        if (!ps) 
        {
            printf("不能打开文件!按任意键退出!");
            fflush(stdin);
            scanf("%c",&x);
            fflush(stdin);
            exit(0); 
        }
        while(!feof(ps))
        {
            //printf("%s %s %.2lf\n",xin[b].id,xin[b].psw,xin[b].money);
            if ((strcmp(Account, xin[b].id)==0)&&(strcmp(Password, xin[b].psw)==0))
            {
                xin[b].money=xin[b].money-outmoney;
            }
            printf("%.2lf\n",xin[b].money);
            fprintf(ps, "%s %s %.2lf\n", xin[b].id, xin[b].psw, xin[b].money);
            b++;
        } 
    }
}
denglu()/*登陆*/
{
    FILE *fp;
    char account[10+ 1],password[6 + 1],h;
    int m=0;
    char real_account[10+ 1];    /* 帐号缓存 */
    char real_password[6 + 1];    /* 密码缓存*/
    double real_money_o=0.0;      /*存款缓存*/
    printf("请输入您的帐号(10位纯数字):");
    gets(account);
    printf("请输入您的密码(6位纯数字):");
    gets(password);
    fp = fopen(cFile, "r");
    if (!fp) 
    {
        printf("不能打开文件!按任意键退出!");
        fflush(stdin);
        scanf("%c",&h);
        fflush(stdin);
        exit(0); 
    }
    while (m<2) /*判断是否输入错3次了*/
    {    
        while(fscanf(fp, "%s %s %lf", real_account, real_password, &real_money_o) != EOF)/*循环判断帐号密码*/
        {    
            if ((strcmp(real_account, account)==0)&&(strcmp(real_password, password)==0)) 
            {    
                system("cls");
                printf("登陆成功!"); 
                gongneng(real_account,real_password,real_money_o);
                fclose(fp); 
                return 0;
            }    
        }    
        rewind(fp); /*重新打开文件，进行新一轮的密码验证*/
        printf("您输入的帐号不存在或密码不正确!\n请重新输入:\n");
        m++;
        printf("请输入您的帐号(10位纯数字):");
        fflush(stdin); 
        gets(account);
        fflush(stdin); 
        printf("请输入您的密码(6位纯数字):");
        fflush(stdin); 
        gets(password); 
        fflush(stdin);
    } 
    fclose(fp);
    printf("您输入帐号密码不正确已经3次,您被强制退出系统(按任意键退出)!");
    fflush(stdin);
    scanf("%c",&h);
    fflush(stdin);
    exit(0);
}
int main() 
{    
    char chiose;    
    welcome1();
    scanf("%c",&chiose);    
    getchar();    
    if(chiose < '0' || chiose > '4')    
    {    
        while(chiose < '0' || chiose > '4')    
        {    
            printf("您的输入有误，请重新输入：");    
            scanf("%c",&chiose);
            getchar();    
        }    
    }    
    if(chiose=='1')    
    {    
        system("cls");    
        zhuce();/*注册*/    
    }    
    if(chiose=='2')    
    {    
        system("cls");    
        denglu();/*登陆*/    
    }    
    if(chiose=='3')
    {    
        printf("谢谢您的使用!");
        exit(0);
    }
}

C语言设计银行账户模拟程序

能传附件吗？不知道怎么传。我就贴给你吧。

#include<iostream>
#include<string>
#include<fstream>
using namespace std;
class account //atm账户类
{
private:
    string CardNum,Psw; //卡号、密码
    float Balance;
public:
    friend class ATM; //atm为友元
    /*void get_cardnum();
    void get_psw();
    void get_balance();*/
    account(){}//---------------------here
    account(string num,string passwd,float balance); //构造函数
    void Write();
};
class ATM //atm机类
{
private:
    int times;
    account *ac;
public:
    ATM(); void load( account *act ); //装入账户信息
    void welcome(); //初始欢迎信息
    bool check_passwd( string pwd ); //验证当前账户信息的密码
    void change_psw(); //修改密码
    void get_money(); //取钱
    float check_balance(); //查账
    void tran(); //转账
    void exit(); //退卡
    void function_show(); //显示功能菜单
    void lock(); //锁定账户
};
/* 
* account::account( string num, string passwd, float balance )
* account类构造函数
* 用途： 使用给定的账号密码等信息初始化一个account对象
* 参数： string num 账号
* string passwd 密码
* float balance
*/
account::account( string num, string passwd, float balance )
{
    CardNum = num;
    Psw = passwd;
    Balance = balance;
}
//atm类构造函数
/*account::get_cardnum()
{
    return CardNum;
}
account::get_psw()
{
    return Psw;
}
account::get_balance()
{
    return Balance;
}*/
void account::Write()
{
    ofstream outfile("atm.txt",ios::binary);//-----------------here
    outfile.write((char *)(this),sizeof(account));//-------------here
    outfile.close();
}
ATM::ATM()
{
}
/* 
* void ATM::load( account *act )
* ATM类装入账户信息函数
* 用途： 载入指定的account对象，模拟atm插卡过程
* 参数： account *act 要载入的account对象指针
*/
void ATM::load( account *act )
{
    ac = act;
}
/* 
* void ATM::welcome()
* ATM类显示初始欢迎信息函数
* 用途： 显示欢迎信息，提示密码输入并验证
* 参数： 无
*
*/
void ATM::welcome()
{
    times = 0; //记录密码输入错误次数
    cout << "Welcome to use the China Bank ATM!" << endl;
    string pwd; //这一个语句应该上移的，一般来说数据的定义和初始化一块写在开头，下面才是各种操作的语句
    while( times < 3 )
    {
        cout << "Please enter the password: " << endl;
        cin >> pwd;
        if( !check_passwd( pwd ) )
        {
            cout << "The password you entered is wrong, please enter again" << endl;
            times++;
        }
        else
        {
            function_show();
            break;
        }
    }
    if( times >= 3 )
        lock(); //输入密码错误次数超过（等于）3次，锁定账户
}
bool ATM::check_passwd( string pwd )
{
    if( pwd == ac->Psw )
        return true;
    else
        return false;
}
void ATM::function_show()
{
    int n;
    cout << "(1) Change Password" << endl;
    cout << "(2) Get Money" << endl;
    cout << "(3) Check Balance" << endl;
    cout << "(4) Transfer accounts" << endl;
    cout << "(5) Exit" << endl;
    cin >> n;
    while(n != 1 && n != 2 && n != 3 && n != 4 && n != 5) //这样就可以完全限制用户的输入
    {
        cout << "Please enter the right number" << endl;
        cin >> n;
    }
    switch( n )
    {
        case 1:
            change_psw();
            break;
        case 2:
            get_money();
            break;
        case 3:
            cout << check_balance() << endl;
            break;
        case 4:
            tran();
            break;
        case 5:
            exit();
            break;
    }
}
void ATM::lock()
{
    cout << "Sorry! Your card has been confiscated!" << endl;
    exit();
}
void ATM::change_psw()
{
    string old_psw, new_psw1, new_psw2;
    int t = 0 ;
    while( t < 3 )
    {
        cout << "Please enter the old password: ";
        cin >> old_psw;
        if( !check_passwd( old_psw ) )
        {
            cout << "The password you enter is wrong, please enter again" << endl;
            t++;
        }
        else
        {
            cout << "Please enter the new password: ";
            cin >> new_psw1;
            cout << "Please enter the new password again: ";
            cin >> new_psw2;
            if( new_psw1 == new_psw2 )
            {
                ac -> Psw = new_psw2;
                cout << "You have change your password successfully!" << endl;
                break;
            }
            else
                cout << "Sorry, entered passwords do not match! " << endl;
        }
    }
    //}//----------------------here
    if( t >= 3 )
    {
        cout << "Sorry, you have inputed the wrong password for three times and more! " << endl;
    }
}
void ATM::get_money()
{
    float money;
    cout << "Please enter the amount of money you want to get: " << endl;
    cin >> money;
    while( money > ac -> Balance)
    {
        cout << "Your balance is not enough, please enter again" << endl;
        cin >> money;
    }
    ac -> Balance = ac -> Balance - money;
}
float ATM::check_balance()
{
    return ac -> Balance;
}
void ATM::tran()
{
    account a[5];
    string cn;
    float m;
    cout << "please enter the cardnum of the account you want to transfer money to" << endl;
    cin >> cn;
    ifstream infile("atm.txt",ios::binary);
    infile.seekg(0,ios::beg);
    for(int i=0;i<5;i++)
    {
        infile.read((char *)(&a[i]),sizeof(a[i]));
    }
    for(int j=0;j<5;j++)
    {
        if(cn == a[i].CardNum)
        {
            cout << "please enter the amount of money" << endl;
            cin >> m;
            while(m > ac->Balance)
            {
                cout << "there is no enough money in your account,please enter again" << endl;
                cin >> m;
            }
            ac->Balance = ac->Balance - m;
            a[i].Balance = a[i].Balance + m;
            ofstream outfile("atm.txt",ios::binary);
            outfile.seekp(i*sizeof(a[0]),ios::beg);
            outfile.write((char *) &a[i],sizeof(a[i]));
        }
    }
    if(j == 5)
    {
        cout << "the account doesn't exit" << endl;
    }
}
void ATM::exit()
{
    cout << "Please take your card!" << endl;
}
int main()
{
    account a[5]={account("10001","1111",5000.0f),account("10002","2222",10000.0f),account("10003","3333",15000.0f),
    account("10004","4444",20000.0f),account("10005","5555",25000.0f)};
    account temp( "10001", "1111", 5000.0f );
    ATM atm;
    atm.load( temp );
    atm.welcome();
    return 0;
}

编写一个C语言程序模拟银行ATM机的账户管理功能，系统主要实现以下功能

按照你的愿意把空都填好了，VC++ 6.0下编译能通过，有警告信息，运行基本上能用，不过个人认为这个系统有很大的不足，比如输入账号的时候没有输出反馈信息，以及没有对误操作的处理等等。需要的话可以帮你改改！

#include stdio.h
#include conio.h
#include stdlib.h
#include string.h
#define AN 9 //表示账号8位
#define PN 7 //表示密码6位
#define ASN 3 //表示系统中共有3个账户信息
struct Account
{
    char accountnumber[AN]; //表示账号信息
    char password[PN]; //表示账户的密码信息
    double balance; //表示账户的余额
};
struct Account ats[ASN]={{"00000001","123456",100},{"00000002","123456",200},{"00000003","123456",300}};
//ats数组用于存储系统中三个账户的信息
int isCorrect(char *an,char *psd)
{
    int i;
    for(i=0;i<ASN;i++)
        if(strcmp(ats[i].accountnumber,an)==0 && strcmp(psd,ats[i].password)==0)
            return 1;
    return 0;
}
double getBalance(char *an)
{
    int i;
    for(i=0;i<ASN;i++)
        if(strcmp(an,ats[i].accountnumber)==0)
            return ats[i].balance;
}
void deposit(char *an,int amount)
{
    int i;
    for(i=0;i<ASN;i++)
        if(strcmp(an,ats[i].accountnumber)==0)
            ats[i].balance += amount;
}
int withdraw(char *an,int amount)
{
    int i;
    for(i=0;i<ASN;i++)
        if(strcmp(an,ats[i].accountnumber)==0)
            return ats[i].balance -= amount;
}
void main()
{
    char AccountNumber[AN]={'\0'};
    char psd[PN]={'\0'};
    int i,errorcount=0;
    while(1)
    {
        printf("\n请输入8位账号：");
        for(i=0;i<8;i++)
            AccountNumber[i]=getch();
        printf("\n请输入6为密码：");
        for(i=0;i<6;i++)
        {
            psd[i]=getch();
            putchar('*');
        }
        if(isCorrect(AccountNumber,psd)==1)
        {
            int tag,amount;
            while(1)
            {
                printf("\n欢迎登录银行账户管理系统，请选择您要的服务：1、查询余额；2、存款操作；3、取款操作；4、退出系统\n");
                scanf("%d",&tag);
                switch(tag)
                {
                    case 1:
                        printf("您现在的余额为%f元\n",getBalance(AccountNumber));
                        break;
                    case 2:
                        printf("请输入您的存款金额：");
                        scanf("%d",&amount);
                        deposit(AccountNumber,amount);
                        printf("存款成功！您的当前余额为：%f元\n",getBalance(AccountNumber));
                        break;
                    case 3:
                        printf("请输入您的取款金额：");
                        scanf("%d",&amount);
                        if(amount <= getBalance(AccountNumber))
                            printf("取款成功！您的当前余额为：%f元\n",withdraw(AccountNumber,amount));
                        else
                            printf("取款失败！\n");
                        break;
                    case 4:
                        break;
                }
                if(tag==4)
                    break;
            }
        }
        else
        {
            errorcount++;
            if(errorcount==3)
            {
                printf("您已经连续三次输入错误，系统将自动关闭\n");
                break;
            }
        }
    }
}

c语言银行程序

#include <math.h>
#include <stdio.h>
main()
{
    int a,c,d,e;
    float b=10000;
    int f;
    int num=1;
    printf("\t\t\t CHNIA BANK ATM\nplease input your secret code:\n");
    scanf("%d",&a);
    if(a==num)
    {
        printf(" welcome you to use your count,you have %.2f RMB!\n",b);
        printf(" how much money do you want? please input the numbers: ");
        scanf("%d",&e);
        printf("\n");
        c = b - e;
        printf(" you till have : %d ,please choose exit or choose function ! \n",c);
        scanf("%c",&d);
        printf("\n");
    }
    else if(a != num)
    {
        printf("your secret code is wrong,please input the correct secret code!\n");
    }
    printf("\t\t \tHELLO,WELCOME TO USE ATM\nplease choose you want function\n");
    printf("\n\n");
    printf("\t\t-----------------------------------\n");
    printf("\t\t|\t\t|\t\t |\n");
    printf("\t\t| 1. check\t| 2. withdraw money\t |\n");
    printf("\t\t|\t\t|\t\t |\n");
    printf("\t\t-----------------------------------\n");
    printf("\t\t|\t\t|\t\t |\n");
    printf("\t\t| 3. transfer account\t| 4. midify secret code|\n");
    printf("\t\t|\t\t|\t\t |\n");
    printf("\t\t-----------------------------------\n");
    printf("\t\t|\t\t\t\t |\n");
    printf("\t\t|\t 0. exit \t\t |\n");
    printf("\t\t|\t\t\t\t |\n");
    printf("\t\t-----------------------------------\n");
    printf("please choose function:\n ");
    scanf("%d",&f);
    switch(f)
    {
        case 0:printf("exit");break;
        case 1:printf("check");break;
        case 2:printf("withdraw money");break;
        case 3:printf("transfer account");break;
        case 4:printf("midify secret code");break;
        default :printf("it's wrong,please choose in 0~
推荐文章