Question

Please code this in C

In this project, we shall simulate the operations of an ATM machine.

Suppose you’re in charge of this simulation and here is a scenario of what is required to do:

The customer will be assigned a random number for his/her balance.

First, the customer is prompted to enter his personal identification number pin (for this case study, we test only if this pin is formed by 4 digits! otherwise, a message like “Invalid PIN, try again . . .” will be displayed) and the user is re-prompted to enter the pin. The customer is given three chances to enter his pin. If he/she fails during the three trials you display a message like “Sorry you can’t continue, contact your bank for assistance!”

If the pin is correct (formed by 4 digits), then the system will ask the customer for the receipt ( 1 for YES and 2 for NO ) and a menu will be displayed containing five possible options to choose from: Fast Cash, Deposit, Withdraw, Balance and Get Card Back.

Here is the explanation of each of the 5 options:

Get Card Back: Display the message “Goodbye! “and exit the program.

Fast Cash: Let the customer choosing the amount of cash from a menu similar to the following:

Press:

1 --> $20.00                $40.00 <-- 2

3 --> $80.00                $100.00 <-- 4

Withdraw: Prompt the user for the amount of money he/she would like to withdraw and make the sure that he/she has enough money for that!

Deposit: Prompt the customer for the amount of deposit.

Balance: Just display the amount of money the customer has.

Don’t forget to print the receipt if the customer wants one.

Sample execution: bolded text represents the user entry

Virtual Bank at West

                              WELCOME

Enter Pin: 245

                        Invalid PIN, Re-enter Pin: 5487

(clear screen )

                        Receipt y or Y -> Yes             No <- n or N  

                        Enter choice: N          

(Clear screen)

CHOOSE FROM THE FOLLOWING

                                    1 -> Fast Cash             Withdraw      <- 2

                                    3 -> Deposit                Check Balance <- 4

                                    5 -> Get Card Back

                                    Enter your choice: 4

                                    (Clear screen)

                        Your Balance is : $124.3

1 -> Another Transaction                    Get Card Back <- 2   

Enter your choice: 1

(Clear screen)

CHOOSE FROM THE FOLLOWING

                                    1 -> Fast Cash             Withdraw      <- 2

                                    3 -> Deposit                Check Balance <- 4

                                    5 -> Get Card Back

                                                Enter your choice: 2

(Clear screen )

Enter amount (enter 0 to cancel): 300.00

Sorry not enough balance

Enter amount (enter 0 to cancel): 30.00

Take your cash…

(Clear screen)

Your Balance is: $124.32

1 -> Another Transaction                    Get Card Back <- 2   

Enter your choice: 1

(Clear screen)

CHOOSE FROM THE FOLLOWING

                                    1 -> Fast Cash             Withdraw      <- 2

                                    3 -> Deposit                Check Balance <- 4

                                    5 -> Get Card Back

Enter your choice: 8

Invalid Entry

(Clear screen)

CHOOSE FROM THE FOLLOWING

                                    1 -> Fast Cash             Withdraw      <- 2

                                    3 -> Deposit                Check Balance <- 4

                                    5 -> Get Card Back

Enter your choice: 5

(Clear screen)

THANK FOR USING OUR VIRTUAL BANK SYSTEM

GOODBYE. . .

Answer 1

Code:

#include <stdio.h>

#include <time.h>

#include <stdlib.h>

#include <conio.h>

int main() {

    int userChoice, cardPin, pinTries = 0, ch;

    char rt;

    double balance;

    srand(time(NULL));

    balance = rand() % 900 + 100;

    printf("Virtual Bank at West\n\t\tWELCOME ");

    do {

        if (pinTries == 0)

            printf("\nEnter PIN: ");

        else

            printf("INVALID PIN, Re-enter PIN: ");

        scanf("%d", & cardPin);

        pinTries++;

        if (cardPin >= 1000 && cardPin < 10000) {

            system("cls");

            printf("Receipt y or Y --> YES\t\tn or N --> No\nEnter Choice: ");

            fflush(stdin);

            scanf("%c", & rt);

            system("cls");

            break;

        }

    } while (pinTries < 3);

    if (pinTries < 3) {

        do {

            printf("\nCHOOSE FROM THE FOLLOWING \n1.Fast Cash\n2.Withdraw\n3.Deposit\n4.Check Balance\n5.Get Card Back \nEnter your choice:");

            scanf("%d", & userChoice);

            switch (userChoice) {

            case 1:

                printf("\nFast Cash:\n1-->$20.00 \t2-->$40.00\t 3-->$80.00\t4-->$100.00 ");

                scanf("%d", & userChoice);

                if (balance > userChoice) {

                    switch (userChoice) {

                    case 1:

                        balance = balance - 20;

                        break;

                    case 2:

                        balance = balance - 40;

                        break;

                    case 3:

                        balance = balance - 80;

                        break;

                    case 4:

                        balance = balance - 100;

                        break;

                    default:

                        printf("\nInvalid Choice\n");

                    }

                } else {

                    system("cls");

                    printf("\nSorry not enough balance");

                }

                printf("\nYour Balance is: %f\n", balance);

                break;

            case 2:

                printf("\nEnter amount (0 to Cancel) : ");

                scanf("%d", & userChoice);

                if(userChoice == 0)

                    break;

                else if (balance > userChoice) {

                    balance = balance - userChoice;

                    system("cls");

                    printf("\nTake your cash… ");

                } else {

                    system("cls");

                    printf("\nSorry not enough balance");

                }

                printf("\nYour Balance is: %f", balance);

                   printf("\n1.Another Transaction\n 2.Get Card Back: ");

                   scanf("%d",&userChoice);

                                                               if(userChoice == 2)

                                                                              userChoice = 5;

                   break;

                break;

            case 3:

                printf("\nEnter amount to deposit: ");

                scanf("%d", & userChoice);

                system("cls");

                balance = balance + userChoice;

                printf("\nYour final Balance is: %f", balance);

                break;

            case 4:

                printf("\nYour Balance is: %f", balance);

                break;

            case 5:

                printf("\nTake yoyr card.....Goodbye! ");

                break;

            default:

                printf("\nInvalid Choice\n");

            }

        } while (userChoice != 5);

        system("cls");

        printf("\nTHANK FOR USING OUR VIRTUAL BANK SYSTEM GOODBYE");

    } else

        printf("\nSorry you can't continue, contact your bank for assistance!");

    return 0;

}

Output: