Question

Create simple baking program and Add filing to it (Save / Load database or customer information) and Explain this program if possible create small report explaining this program
( PROGRAM MUST BE IN C LANGUAGE )
Format of output should be like:
1. Create New Account
2. Cash Deposit
3. Cash Withdraw
4. Low Balance Enquiry
5. Load
6. Save
7. Exit

Answer 1

/*

Following program executed on DEV C++ . you may try other compiler also.

Important Note:

Program data saved in "save.txt" file which created at working directory

Program Load data from file name entered by user. It mean file should be present in working directory. in my program i am using file "load.txt"

you can used my file also

for load.txt you should used following format (one record on one line)

accountno,accountholdername,balance

like 123,abc,500

*/

#include <stdio.h>
#include <string.h>
#include<stdlib.h>
struct Bank_Account_Holder
{
    int account_no;
    char name[80];
    int balance;
};
int n;
void accept(struct Bank_Account_Holder[], int);
void display(struct Bank_Account_Holder[], int);
void save(struct Bank_Account_Holder[], int);
void load(struct Bank_Account_Holder[], int);
int search(struct Bank_Account_Holder[], int, int);
void deposit(struct Bank_Account_Holder[], int, int, int);
void withdraw(struct Bank_Account_Holder[], int, int, int);
int lowBalenquiry(int,int);

int main()
{
    struct Bank_Account_Holder data[20];
    int choice, account_no, amount, index;

    printf("ISEEISEE Banking System\n\n");
    printf("Enter the count of records: ");
    scanf("%d", &n);
    accept(data, n);
    do
    {

        printf("\nISEEISEE Banking System Menu :\n");
        printf("Press 1 to display all records.\n");
        printf("Press 2 to search a record.\n");
        printf("Press 3 to deposit amount.\n");
        printf("Press 4 to withdraw amount.\n");
        printf("Press 5 to save all records to file.\n");
        printf("Press 6 to load Records from file.\n");
        printf("Press 0 to exit\n");
        printf("\nEnter choice(0-4) : ");
        scanf("%d", &choice);
        switch (choice)
        {
            case 1:
                display(data, n);
                break;
            case 2:
                printf("Enter account number to search : ");
                scanf("%d", &account_no);
                index = search(data, n, account_no);
                if (index == - 1)
                {
                    printf("Record not found : ");
                }
                else
                {
                    printf("A/c Number: %d\nName: %s\nBalance: %d\n",
                        data[index].account_no, data[index].name,
                        data[index].balance);
                }
                break;
            case 3:
                printf("Enter account number : ");
                scanf("%d", &account_no);
                printf("Enter amount to deposit : ");
                scanf("%d", &amount);
                deposit(data, n, account_no, amount);
                break;
            case 4:
                printf("Enter account number : ");
                scanf("%d", &account_no);
                printf("Enter amount to withdraw : ");
                scanf("%d", &amount);
                withdraw(data, n, account_no, amount);
                break;
            case 5:
                save(data, n);
                break;
           case 6:
               load(data, n);  
               break;
           default:
               printf("\nWrong choice");
           case 0:
               return 0;    
        }
    }
    while (choice != 0);

    return 0;
}

void accept(struct Bank_Account_Holder array[80], int s)
{
    int i;
    for (i = 0; i < s; i++)
    {
        printf("\nEnter data for Record #%d", i + 1);

        printf("\n Enter account_no : ");
        scanf("%d", &array[i].account_no);
        fflush(stdin);
        printf("Enter name of account Holder : ");
        gets(array[i].name);
        array[i].balance = 0;
    }
}

void load(struct Bank_Account_Holder array[80], int s)
{
  
    int i;
    char fname[20];
    printf("\nEnter File with extention for loading::");
    scanf("%s",&fname);
    FILE * fp;
    char dataToBeRead[50];
    fp = fopen(fname, "r");
    if ( fp == NULL )
    {
        printf( "\n File Cannot Find" ) ;
    }
    else
    {
        
        printf("\n The file is now opened.\n") ;
        
        // Read the dataToBeRead from the file
        // using fgets() method
        while( fgets ( dataToBeRead, 50, fp ) != NULL )
        {
          char *ptr = strtok(dataToBeRead, ",");
          
             
                array[n].account_no=atoi(ptr);
                ptr = strtok(NULL, ",");
                //printf("'%s'\n", ptr);
                strcpy(array[n].name,ptr);
                ptr = strtok(NULL, ",");
                //printf("'%s'\n", ptr);
                array[n].balance=atoi(ptr);
                ptr = strtok(NULL, ",");
                n=n+1;
         
         }
        
        // Closing the file using fclose()
        fclose(fp) ;
        
        printf("Data successfully read from file\n");
        printf("The file is now closed.") ;
    }

}

void display(struct Bank_Account_Holder array[80], int s)
{
    int i;

    printf("\n\nA/c No\tName\tBalance\n");
    for (i = 0; i < s; i++)
    {
        printf("%d\t%s\t%d\n", array[i].account_no, array[i].name,
            array[i].balance);
    }
}
// save records to file
void save(struct Bank_Account_Holder array[80], int s)
{
    int i;
    FILE *fp ;
    fp = fopen("save.txt", "w");

    for (i = 0; i < s; i++)
    {
      //each line represent single record and field seperated by comma
            fprintf(fp, "%d,%s,%d\n", array[i].account_no, array[i].name,
            array[i].balance);
    }
    fclose(fp);
    printf("\nSaved Sucessfully to file");
}

int search(struct Bank_Account_Holder array[80], int s, int number)
{
    int i;

    for (i = 0; i < s; i++)
    {
        if (array[i].account_no == number)
        {
            return i;
        }
    }
    return - 1;
}

void deposit(struct Bank_Account_Holder array[], int s, int number, int amt)
{
    int i = search(array, s, number);
    if (i == - 1)
    {
        printf("Record not found");
    }
    else
    {
        array[i].balance += amt;
    }
}

void withdraw(struct Bank_Account_Holder array[], int s, int number, int amt)
{
    int i = search(array, s, number);
    if (i == - 1)
    {
        printf("Record not found\n");
    }
    else if (lowBalenquiry(array[i].balance,amt))
    {
        printf("Insufficient balance\n");
    }
    else
    {
        array[i].balance -= amt;
    }
}
int lowBalenquiry(int bal,int amt){
   if(bal < amt)
   return 1;
   return 0;
}

/*

output

ISEEISEE Banking System

Enter the count of records: 2

Enter data for Record #1
Enter account_no : 47
Enter name of account Holder : my name

Enter data for Record #2
Enter account_no : 48
Enter name of account Holder : patil

ISEEISEE Banking System Menu :
Press 1 to display all records.
Press 2 to search a record.
Press 3 to deposit amount.
Press 4 to withdraw amount.
Press 5 to save all records to file.
Press 6 to load Records from file.
Press 0 to exit

Enter choice(0-4) : 1

A/c No Name    Balance
47      my name 0
48      patil   0

ISEEISEE Banking System Menu :
Press 1 to display all records.
Press 2 to search a record.
Press 3 to deposit amount.
Press 4 to withdraw amount.
Press 5 to save all records to file.
Press 6 to load Records from file.
Press 0 to exit

Enter choice(0-4) : 3
Enter account number : 47
Enter amount to deposit : 500

ISEEISEE Banking System Menu :
Press 1 to display all records.
Press 2 to search a record.
Press 3 to deposit amount.
Press 4 to withdraw amount.
Press 5 to save all records to file.
Press 6 to load Records from file.
Press 0 to exit

Enter choice(0-4) : 4
Enter account number : 47
Enter amount to withdraw : 501
Insufficient balance

ISEEISEE Banking System Menu :
Press 1 to display all records.
Press 2 to search a record.
Press 3 to deposit amount.
Press 4 to withdraw amount.
Press 5 to save all records to file.
Press 6 to load Records from file.
Press 0 to exit

Enter choice(0-4) : 4
Enter account number : 47
Enter amount to withdraw : 300

ISEEISEE Banking System Menu :
Press 1 to display all records.
Press 2 to search a record.
Press 3 to deposit amount.
Press 4 to withdraw amount.
Press 5 to save all records to file.
Press 6 to load Records from file.
Press 0 to exit

Enter choice(0-4) : 1

A/c No Name    Balance
47      my name 200
48      patil   0

ISEEISEE Banking System Menu :
Press 1 to display all records.
Press 2 to search a record.
Press 3 to deposit amount.
Press 4 to withdraw amount.
Press 5 to save all records to file.
Press 6 to load Records from file.
Press 0 to exit

Enter choice(0-4) : 5

Saved Sucessfully to file
ISEEISEE Banking System Menu :
Press 1 to display all records.
Press 2 to search a record.
Press 3 to deposit amount.
Press 4 to withdraw amount.
Press 5 to save all records to file.
Press 6 to load Records from file.
Press 0 to exit

Enter choice(0-4) : 6

Enter File with extention for loading::load.txt

The file is now opened.
Data successfully read from file
The file is now closed.
ISEEISEE Banking System Menu :
Press 1 to display all records.
Press 2 to search a record.
Press 3 to deposit amount.
Press 4 to withdraw amount.
Press 5 to save all records to file.
Press 6 to load Records from file.
Press 0 to exit

Enter choice(0-4) : 1

A/c No Name    Balance
47      my name 200
48      patil   0
123     abc     500
124     xyz     0

ISEEISEE Banking System Menu :
Press 1 to display all records.
Press 2 to search a record.
Press 3 to deposit amount.
Press 4 to withdraw amount.
Press 5 to save all records to file.
Press 6 to load Records from file.
Press 0 to exit

Enter choice(0-4) :

*/

/*

save.txt

47,my name,200
48,patil,0

load.txt

123,abc,500
124,xyz,0

*/