Bank Management System Project Using C Language

Introduction

You may use this C Language Project to establish a new account, change existing account information, see and manage transactions, verify the details of an existing account, delete an existing account, and browse a list of customers.

Overall, this project allows you to do financial transactions as if you were at a real bank. A console program without graphics is a part of the bank management mini project in C Language.

Source Code for Bank Management System Project Using C Language

#include<stdio.h>
#include<stdlib.h>
#include<windows.h>
int i,j;
int main_exit;
void menu();
struct date{
    int month,day,year;

    };
struct {

    char name[60];
    int acc_no,age;
    char address[60];
    char citizenship[15];
    double phone;
    char acc_type[10];
    float amt;
    struct date dob;
    struct date deposit;
    struct date withdraw;

    }add,upd,check,rem,transaction;

float interest(float t,float amount,int rate)
{
    float SI;
    SI=(rate*t*amount)/100.0;
    return (SI);

}
void fordelay(int j)
{   int i,k;
    for(i=0;i<j;i++)
         k=i;
}

void new_acc()

{
    int choice;
    FILE *ptr;

    ptr=fopen("record.dat","a+");
    account_no:
    system("cls");
    printf("\t\t\t\xB2\xB2\xB2\ ADD RECORD  \xB2\xB2\xB2\xB2");
    printf("\n\n\nEnter today's date(mm/dd/yyyy):");
    scanf("%d/%d/%d",&add.deposit.month,&add.deposit.day,&add.deposit.year);
    printf("\nEnter the account number:");
    scanf("%d",&check.acc_no);
    while(fscanf(ptr,"%d %s %d/%d/%d %d %s %s %lf %s %f %d/%d/%d\n",&add.acc_no,add.name,&add.dob.month,&add.dob.day,&add.dob.year,&add.age,add.address,add.citizenship,&add.phone,add.acc_type,&add.amt,&add.deposit.month,&add.deposit.day,&add.deposit.year)!=EOF)
    {
        if (check.acc_no==add.acc_no)
            {printf("Account no. already in use!");
            fordelay(1000000000);
                goto account_no;

            }
    }
    add.acc_no=check.acc_no;
        printf("\nEnter the name:");
    scanf("%s",add.name);
    printf("\nEnter the date of birth(mm/dd/yyyy):");
    scanf("%d/%d/%d",&add.dob.month,&add.dob.day,&add.dob.year);
    printf("\nEnter the age:");
    scanf("%d",&add.age);
    printf("\nEnter the address:");
    scanf("%s",add.address);
    printf("\nEnter the citizenship number:");
    scanf("%s",add.citizenship);
    printf("\nEnter the phone number: ");
    scanf("%lf",&add.phone);
    printf("\nEnter the amount to deposit:$");
    scanf("%f",&add.amt);
    printf("\nType of account:\n\t#Saving\n\t#Current\n\t#Fixed1(for 1 year)\n\t#Fixed2(for 2 years)\n\t#Fixed3(for 3 years)\n\n\tEnter your choice:");
    scanf("%s",add.acc_type);

        fprintf(ptr,"%d %s %d/%d/%d %d %s %s %lf %s %f %d/%d/%d\n",add.acc_no,add.name,add.dob.month,add.dob.day,add.dob.year,add.age,add.address,add.citizenship,add.phone,add.acc_type,add.amt,add.deposit.month,add.deposit.day,add.deposit.year);


    fclose(ptr);
    printf("\nAccount created successfully!");
    add_invalid:
    printf("\n\n\n\t\tEnter 1 to go to the main menu and 0 to exit:");
    scanf("%d",&main_exit);
    system("cls");
    if (main_exit==1)
        menu();
    else if(main_exit==0)
            close();
    else
        {
            printf("\nInvalid!\a");
            goto add_invalid;
        }
}
void view_list()
{
    FILE *view;
    view=fopen("record.dat","r");
    int test=0;
    system("cls");
    printf("\nACC. NO.\tNAME\t\t\tADDRESS\t\t\tPHONE\n");

    while(fscanf(view,"%d %s %d/%d/%d %d %s %s %lf %s %f %d/%d/%d",&add.acc_no,add.name,&add.dob.month,&add.dob.day,&add.dob.year,&add.age,add.address,add.citizenship,&add.phone,add.acc_type,&add.amt,&add.deposit.month,&add.deposit.day,&add.deposit.year)!=EOF)
       {
           printf("\n%6d\t %10s\t\t\t%10s\t\t%.0lf",add.acc_no,add.name,add.address,add.phone);
           test++;
       }

    fclose(view);
    if (test==0)
        {   system("cls");
            printf("\nNO RECORDS!!\n");}

    view_list_invalid:
     printf("\n\nEnter 1 to go to the main menu and 0 to exit:");
        scanf("%d",&main_exit);
        system("cls");
        if (main_exit==1)
            menu();
        else if(main_exit==0)
            close();
        else
        {
            printf("\nInvalid!\a");
            goto view_list_invalid;
        }
}
void edit(void)
{
    int choice,test=0;
    FILE *old,*newrec;
    old=fopen("record.dat","r");
    newrec=fopen("new.dat","w");

    printf("\nEnter the account no. of the customer whose info you want to change:");
    scanf("%d",&upd.acc_no);
    while(fscanf(old,"%d %s %d/%d/%d %d %s %s %lf %s %f %d/%d/%d",&add.acc_no,add.name,&add.dob.month,&add.dob.day,&add.dob.year,&add.age,add.address,add.citizenship,&add.phone,add.acc_type,&add.amt,&add.deposit.month,&add.deposit.day,&add.deposit.year)!=EOF)
    {
        if (add.acc_no==upd.acc_no)
        {   test=1;
            printf("\nWhich information do you want to change?\n1.Address\n2.Phone\n\nEnter your choice(1 for address and 2 for phone):");
            scanf("%d",&choice);
            system("cls");
            if(choice==1)
                {printf("Enter the new address:");
                scanf("%s",upd.address);
                fprintf(newrec,"%d %s %d/%d/%d %d %s %s %lf %s %f %d/%d/%d\n",add.acc_no,add.name,add.dob.month,add.dob.day,add.dob.year,add.age,upd.address,add.citizenship,add.phone,add.acc_type,add.amt,add.deposit.month,add.deposit.day,add.deposit.year);
                system("cls");
                printf("Changes saved!");
                }
            else if(choice==2)
                {
                    printf("Enter the new phone number:");
                scanf("%lf",&upd.phone);
                fprintf(newrec,"%d %s %d/%d/%d %d %s %s %lf %s %f %d/%d/%d\n",add.acc_no,add.name,add.dob.month,add.dob.day,add.dob.year,add.age,add.address,add.citizenship,upd.phone,add.acc_type,add.amt,add.deposit.month,add.deposit.day,add.deposit.year);
                system("cls");
                printf("Changes saved!");
                }

        }
        else
            fprintf(newrec,"%d %s %d/%d/%d %d %s %s %lf %s %f %d/%d/%d\n",add.acc_no,add.name,add.dob.month,add.dob.day,add.dob.year,add.age,add.address,add.citizenship,add.phone,add.acc_type,add.amt,add.deposit.month,add.deposit.day,add.deposit.year);
    }
    fclose(old);
    fclose(newrec);
    remove("record.dat");
    rename("new.dat","record.dat");

if(test!=1)
        {   system("cls");
            printf("\nRecord not found!!\a\a\a");
            edit_invalid:
              printf("\nEnter 0 to try again,1 to return to main menu and 2 to exit:");
              scanf("%d",&main_exit);
              system("cls");
                 if (main_exit==1)

                    menu();
                else if (main_exit==2)
                    close();
                else if(main_exit==0)
                    edit();
                else
                    {printf("\nInvalid!\a");
                    goto edit_invalid;}
        }
    else
        {printf("\n\n\nEnter 1 to go to the main menu and 0 to exit:");
        scanf("%d",&main_exit);
        system("cls");
        if (main_exit==1)
            menu();
        else
            close();
        }
}

void transact(void)
{   int choice,test=0;
    FILE *old,*newrec;
    old=fopen("record.dat","r");
    newrec=fopen("new.dat","w");

        printf("Enter the account no. of the customer:");
    scanf("%d",&transaction.acc_no);
    while (fscanf(old,"%d %s %d/%d/%d %d %s %s %lf %s %f %d/%d/%d",&add.acc_no,add.name,&add.dob.month,&add.dob.day,&add.dob.year,&add.age,add.address,add.citizenship,&add.phone,add.acc_type,&add.amt,&add.deposit.month,&add.deposit.day,&add.deposit.year)!=EOF)
   {

            if(add.acc_no==transaction.acc_no)
            {   test=1;
                if(strcmpi(add.acc_type,"fixed1")==0||strcmpi(add.acc_type,"fixed2")==0||strcmpi(add.acc_type,"fixed3")==0)
                {
                    printf("\a\a\a\n\nYOU CANNOT DEPOSIT OR WITHDRAW CASH IN FIXED ACCOUNTS!!!!!");
                    fordelay(1000000000);
                    system("cls");
                    menu();

                }
                printf("\n\nDo you want to\n1.Deposit\n2.Withdraw?\n\nEnter your choice(1 for deposit and 2 for withdraw):");
                scanf("%d",&choice);
                if (choice==1)
                {
                    printf("Enter the amount you want to deposit:$ ");
                    scanf("%f",&transaction.amt);
                    add.amt+=transaction.amt;
                    fprintf(newrec,"%d %s %d/%d/%d %d %s %s %lf %s %f %d/%d/%d\n",add.acc_no,add.name,add.dob.month,add.dob.day,add.dob.year,add.age,add.address,add.citizenship,add.phone,add.acc_type,add.amt,add.deposit.month,add.deposit.day,add.deposit.year);
                    printf("\n\nDeposited successfully!");
                }
                else
                {
                    printf("Enter the amount you want to withdraw:$ ");
                    scanf("%f",&transaction.amt);
                    add.amt-=transaction.amt;
                    fprintf(newrec,"%d %s %d/%d/%d %d %s %s %lf %s %f %d/%d/%d\n",add.acc_no,add.name,add.dob.month,add.dob.day,add.dob.year,add.age,add.address,add.citizenship,add.phone,add.acc_type,add.amt,add.deposit.month,add.deposit.day,add.deposit.year);
                    printf("\n\nWithdrawn successfully!");
                }

            }
            else
            {
               fprintf(newrec,"%d %s %d/%d/%d %d %s %s %lf %s %f %d/%d/%d\n",add.acc_no,add.name,add.dob.month,add.dob.day,add.dob.year,add.age,add.address,add.citizenship,add.phone,add.acc_type,add.amt,add.deposit.month,add.deposit.day,add.deposit.year);
            }
   }
   fclose(old);
   fclose(newrec);
   remove("record.dat");
   rename("new.dat","record.dat");
   if(test!=1)
   {
       printf("\n\nRecord not found!!");
       transact_invalid:
      printf("\n\n\nEnter 0 to try again,1 to return to main menu and 2 to exit:");
      scanf("%d",&main_exit);
      system("cls");
      if (main_exit==0)
        transact();
    else if (main_exit==1)
        menu();
    else if (main_exit==2)
        close();
    else
    {
        printf("\nInvalid!");
        goto transact_invalid;
    }

   }
   else
   {
       printf("\nEnter 1 to go to the main menu and 0 to exit:");
        scanf("%d",&main_exit);
        system("cls");
        if (main_exit==1)
            menu();
        else
            close();
   }

}
void erase(void)
{
    FILE *old,*newrec;
    int test=0;
    old=fopen("record.dat","r");
    newrec=fopen("new.dat","w");
    printf("Enter the account no. of the customer you want to delete:");
    scanf("%d",&rem.acc_no);
    while (fscanf(old,"%d %s %d/%d/%d %d %s %s %lf %s %f %d/%d/%d",&add.acc_no,add.name,&add.dob.month,&add.dob.day,&add.dob.year,&add.age,add.address,add.citizenship,&add.phone,add.acc_type,&add.amt,&add.deposit.month,&add.deposit.day,&add.deposit.year)!=EOF)
   {
        if(add.acc_no!=rem.acc_no)
            fprintf(newrec,"%d %s %d/%d/%d %d %s %s %lf %s %f %d/%d/%d\n",add.acc_no,add.name,add.dob.month,add.dob.day,add.dob.year,add.age,add.address,add.citizenship,add.phone,add.acc_type,add.amt,add.deposit.month,add.deposit.day,add.deposit.year);

        else
            {test++;
            printf("\nRecord deleted successfully!\n");
            }
   }
   fclose(old);
   fclose(newrec);
   remove("record.dat");
   rename("new.dat","record.dat");
   if(test==0)
        {
            printf("\nRecord not found!!\a\a\a");
            erase_invalid:
              printf("\nEnter 0 to try again,1 to return to main menu and 2 to exit:");
              scanf("%d",&main_exit);

                 if (main_exit==1)
                    menu();
                else if (main_exit==2)
                    close();
                else if(main_exit==0)
                    erase();
                else
                    {printf("\nInvalid!\a");
                    goto erase_invalid;}
        }
    else
        {printf("\nEnter 1 to go to the main menu and 0 to exit:");
        scanf("%d",&main_exit);
        system("cls");
        if (main_exit==1)
            menu();
        else
            close();
        }

}

void see(void)
{
    FILE *ptr;
    int test=0,rate;
    int choice;
    float time;
    float intrst;
    ptr=fopen("record.dat","r");
    printf("Do you want to check by\n1.Account no\n2.Name\nEnter your choice:");
    scanf("%d",&choice);
    if (choice==1)
    {   printf("Enter the account number:");
        scanf("%d",&check.acc_no);

        while (fscanf(ptr,"%d %s %d/%d/%d %d %s %s %lf %s %f %d/%d/%d",&add.acc_no,add.name,&add.dob.month,&add.dob.day,&add.dob.year,&add.age,add.address,add.citizenship,&add.phone,add.acc_type,&add.amt,&add.deposit.month,&add.deposit.day,&add.deposit.year)!=EOF)
        {
            if(add.acc_no==check.acc_no)
            {   system("cls");
                test=1;

                printf("\nAccount NO.:%d\nName:%s \nDOB:%d/%d/%d \nAge:%d \nAddress:%s \nCitizenship No:%s \nPhone number:%.0lf \nType Of Account:%s \nAmount deposited:$ %.2f \nDate Of Deposit:%d/%d/%d\n\n",add.acc_no,add.name,add.dob.month,add.dob.day,add.dob.year,add.age,add.address,add.citizenship,add.phone,
                add.acc_type,add.amt,add.deposit.month,add.deposit.day,add.deposit.year);
                if(strcmpi(add.acc_type,"fixed1")==0)
                    {
                        time=1.0;
                        rate=9;
                        intrst=interest(time,add.amt,rate);
                        printf("\n\nYou will get $%.2f as interest on %d/%d/%d",intrst,add.deposit.month,add.deposit.day,add.deposit.year+1);
                    }
                else if(strcmpi(add.acc_type,"fixed2")==0)
                    {
                        time=2.0;
                        rate=11;
                        intrst=interest(time,add.amt,rate);
                        printf("\n\nYou will get $.%.2f as interest on %d/%d/%d",intrst,add.deposit.month,add.deposit.day,add.deposit.year+2);

                    }
                else if(strcmpi(add.acc_type,"fixed3")==0)
                    {
                        time=3.0;
                        rate=13;
                        intrst=interest(time,add.amt,rate);
                        printf("\n\nYou will get $.%.2f as interest on %d/%d/%d",intrst,add.deposit.month,add.deposit.day,add.deposit.year+3);

                    }
                 else if(strcmpi(add.acc_type,"saving")==0)
                    {
                        time=(1.0/12.0);
                        rate=8;
                        intrst=interest(time,add.amt,rate);
                        printf("\n\nYou will get $.%.2f as interest on %d of every month",intrst,add.deposit.day);

                     }
                 else if(strcmpi(add.acc_type,"current")==0)
                    {

                        printf("\n\nYou will get no interest\a\a");

                     }

            }
        }
    }
    else if (choice==2)
    {   printf("Enter the name:");
        scanf("%s",&check.name);
        while (fscanf(ptr,"%d %s %d/%d/%d %d %s %s %lf %s %f %d/%d/%d",&add.acc_no,add.name,&add.dob.month,&add.dob.day,&add.dob.year,&add.age,add.address,add.citizenship,&add.phone,add.acc_type,&add.amt,&add.deposit.month,&add.deposit.day,&add.deposit.year)!=EOF)
        {
            if(strcmpi(add.name,check.name)==0)
            {   system("cls");
                test=1;
                printf("\nAccount No.:%d\nName:%s \nDOB:%d/%d/%d \nAge:%d \nAddress:%s \nCitizenship No:%s \nPhone number:%.0lf \nType Of Account:%s \nAmount deposited:$%.2f \nDate Of Deposit:%d/%d/%d\n\n",add.acc_no,add.name,add.dob.month,add.dob.day,add.dob.year,add.age,add.address,add.citizenship,add.phone,
                add.acc_type,add.amt,add.deposit.month,add.deposit.day,add.deposit.year);
                if(strcmpi(add.acc_type,"fixed1")==0)
                    {
                        time=1.0;
                        rate=9;
                        intrst=interest(time,add.amt,rate);
                        printf("\n\nYou will get $.%.2f as interest on %d/%d/%d",intrst,add.deposit.month,add.deposit.day,add.deposit.year+1);
                    }
                else if(strcmpi(add.acc_type,"fixed2")==0)
                    {
                        time=2.0;
                        rate=11;
                        intrst=interest(time,add.amt,rate);
                        printf("\n\nYou will get $.%.2f as interest on %d/%d/%d",intrst,add.deposit.month,add.deposit.day,add.deposit.year+2);

                    }
                else if(strcmpi(add.acc_type,"fixed3")==0)
                    {
                        time=3.0;
                        rate=13;
                        intrst=interest(time,add.amt,rate);
                        printf("\n\nYou will get $.%.2f as interest on %d/%d/%d",intrst,add.deposit.month,add.deposit.day,add.deposit.year+3);

                    }
                 else if(strcmpi(add.acc_type,"saving")==0)
                    {
                        time=(1.0/12.0);
                        rate=8;
                        intrst=interest(time,add.amt,rate);
                        printf("\n\nYou will get $.%.2f as interest on %d of every month",intrst,add.deposit.day);

                     }
                 else if(strcmpi(add.acc_type,"current")==0)
                    {

                        printf("\n\nYou will get no interest\a\a");

                     }

            }
        }
    }


    fclose(ptr);
     if(test!=1)
        {   system("cls");
            printf("\nRecord not found!!\a\a\a");
            see_invalid:
              printf("\nEnter 0 to try again,1 to return to main menu and 2 to exit:");
              scanf("%d",&main_exit);
              system("cls");
                 if (main_exit==1)
                    menu();
                else if (main_exit==2)
                    close();
                else if(main_exit==0)
                    see();
                else
                    {
                        system("cls");
                        printf("\nInvalid!\a");
                        goto see_invalid;}
        }
    else
        {printf("\nEnter 1 to go to the main menu and 0 to exit:");
        scanf("%d",&main_exit);}
        if (main_exit==1)
        {
            system("cls");
            menu();
        }

        else
           {

             system("cls");
            close();
            }

}


void close(void)
{
    printf("\n\n\n\nThis C Mini Project is developed by Code With C team!");
    }


void menu(void)
{   int choice;
    system("cls");
    system("color 9");
    printf("\n\n\t\t\tCUSTOMER ACCOUNT BANKING MANAGEMENT SYSTEM");
    printf("\n\n\n\t\t\t\xB2\xB2\xB2\xB2\xB2\xB2\xB2 WELCOME TO THE MAIN MENU \xB2\xB2\xB2\xB2\xB2\xB2\xB2");
    printf("\n\n\t\t1.Create new account\n\t\t2.Update information of existing account\n\t\t3.For transactions\n\t\t4.Check the details of existing account\n\t\t5.Removing existing account\n\t\t6.View customer's list\n\t\t7.Exit\n\n\n\n\n\t\t Enter your choice:");
    scanf("%d",&choice);

    system("cls");
    switch(choice)
    {
        case 1:new_acc();
        break;
        case 2:edit();
        break;
        case 3:transact();
        break;
        case 4:see();
        break;
        case 5:erase();
        break;
        case 6:view_list();
        break;
        case 7:close();
        break;

    }



}
int main()
{
    char pass[10],password[10]="codewithc";
    int i=0;
    printf("\n\n\t\tEnter the password to login:");
    scanf("%s",pass);
    /*do
    {
    //if (pass[i]!=13&&pass[i]!=8)
        {
            printf("*");
            pass[i]=getch();
            i++;
        }
    }while (pass[i]!=13);
    pass[10]='\0';*/
    if (strcmp(pass,password)==0)
        {printf("\n\nPassword Match!\nLOADING");
        for(i=0;i<=6;i++)
        {
            fordelay(100000000);
            printf(".");
        }
                system("cls");
            menu();
        }
    else
        {   printf("\n\nWrong password!!\a\a\a");
            login_try:
            printf("\nEnter 1 to try again and 0 to exit:");
            scanf("%d",&main_exit);
            if (main_exit==1)
                    {

                        system("cls");
                        main();
                    }

            else if (main_exit==0)
                    {
                    system("cls");
                    close();}
            else
                    {printf("\nInvalid!");
                    fordelay(1000000000);
                    system("cls");
                    goto login_try;}

        }
        return 0;
}

Output

Functions in the Bank Management System

The source code for the Bank Management System for Customer Accounts is reasonably short and simple to comprehend. This C mini project is separated into many functions, most of which are connected to various financial operations. Some of the most critical functionalities are listed below to assist you better understand the project.

• menu() – This function shows a menu or welcome screen that allows you to execute the various banking tasks listed below.
• new acc() – Creates a new customer account using this function. It requests the customer's name, date of birth, citizenship number, address, and phone number, among other personal and financial information. You may pick from a variety of deposit accounts, including savings, current, fixed for 1 year, fixed for 2 years, and fixed for 3 years.
• view list() – Displays a list of items. This feature allows you to access the customer's banking information, including the account number, name, address, and phone number supplied when the account was created.
• edit() – This method has been used to update the address and phone number associated with a specific customer account.
• transact() — This method allows you to deposit and withdraw funds from a specific client account.
• remove() – A client account may be deleted using this service.
• see() is a function that allows you to look at something. Account number, name, date of birth, citizenship number, age, address, phone number, kind of account, amount deposited, and date of deposit are all shown in this feature. It also shows the amount of interest earned on a certain account type.

File handling has been employed for practically all functionalities in this C bank management system project. The file has been used to hold data pertaining to new accounts, transactions, account editing, and account viewing. For the menu, interest calculation, and password, I haven't utilized file handling.

Conclusion

After finishing the Bank Management System project using the C programming language, it is clear that this system is a useful tool for managing the transactions and operations of a bank. Users can do many things with the system, like set up accounts, deposit and withdraw money, and check their account balances. This project shows how powerful and flexible the C language is, as well as how it can handle complicated tasks in a clear and efficient way. Overall, putting the Bank Management System into place using C was a success, and it is expected to be a useful tool for managing how a bank works.