C Projects (ATM)

 TASK-

ATM Machine

Develop a C-Code for the implementation of ATM machine with the following features:

1. Have a name of your bank. Make an account of a dummy client with an initial amount of Rs.250,000 and a 4 digit PIN (5678).
2. Your code should first of all say Welcome to the client.
3. Your code then should ask the client to enter the 4-digit PIN. Check the PIN. If it is incorrect, ask the client again to re-enter the PIN. Allow the client to enter the PIN for maximum three times only. For 3rd incorrect entry, display the message “Your card is captured. Please contact the Bank Manager”, and the program should be terminated.
4. If correct PIN is entered (within maximum three attempts), your code should display the following main menu.

1.  Balance Enquiry
2. Cash Withdrawal
3. Cash Deposit
4. Change PIN
5.  Exit

For Further Detail about the task click here: 👉👉 ATM MACHINE

CODE:

#include<stdio.h>

#include<stdlib.h>

Int main () {

          //Validity check

 Int pin,entered_pin,intial_amount,count=1;

int new_pin1,new_pin2,_new_pin3,old_pin;

          pin=5678;

          intial_amount=250000;

          printf("\t\tMUSLIM BANK\n");

          printf("*WELCOME*\n");

          while (entered_pin!=pin)

          {

                   printf("\nEnter your Pin\n");

                   scanf("%d",&entered_pin);

                   if (entered_pin!=pin && count!=3)

                   printf("\nInvalid try again!\n");

                   if (count==3 && entered_pin!=pin  )

                   {

                   printf("Your card is captured. Please contact the Bank Manager");

                   exit(0);

          }

                   count++;

          }

          //validity check over;

Expected Output for  Validity

Case 1: When all Tries are fail!

Case 2:

Pin correctly entered after 2 tries and main menu is shown

          //MAIN MENU

int ext=0,opt,amount,amount2=25000;
int ext2=0,amount3,amount4=90000,ext3=0,ext4=0,ext5=0;
        

  char s,opt2;
  

 while (ext!=1)
   {
printf("\t\tPlease select the option\n");

printf("1)  Balance Enquiry\n2)  Cash Withdrawal\n3)  Cash Deposit\n4)  Change PIN\n5)  Exit\n");
         

 scanf("%d",&opt);
         

         switch(opt)
          {

                   //balance enquiry

                   case 1:
                   printf("Your current balance is %d\n",intial_amount);
                   printf("Press A to return to main menu or enter B to Exit\n");

                             

                        scanf("%s",&s);
                             if (s=='A'&&s=='a')
                             continue;
                             else if(s=='B'&&s=='b')
                             ext=1;

Expected Output for Balance enquiry + Repeat Option:

                   // cash withdraw

                   case 2:
          while (ext2!=2){
                  

                    printf("Enter an amount \n");
                   scanf("%d",&amount);
                  

                  if (amount>intial_amount)
                   {
                             printf("you don't have enough money\n");
                             break;
                   }
                   

                   else if (amount>amount2 )
                   

                    {
                             printf("Entered amount is greater than 25000\n");
                             continue;
                   }
                  

                  else if (amount%500!=0)
                   

                   {
                             printf("Entered amount is not a multiple of 500\n");
                             continue;
                   }
                   

                else
              

                {
                    intial_amount=intial_amount-amount;
                    printf("Please take your amount %d\n",amount);
                  

              printf("Your current balance = %d\n",intial_amount);

printf("Do you want more Withdrawal Transaction? Press Y for Yes or N for No\n");
                    scanf("%s",&opt2);
                    if (opt2=='Y'&&opt2=='y')
                    {
                             continue;
                             }
                             else if (opt2=='N'&&opt2=='n')
                             break;
                   }
}
printf("Press A to return to main menu or enter B to Exit\n");
                           

                            scanf("%s",&s);
                             if (s=='A'&&s=='a')
                             continue;
                             else if(s=='B'&&s=='b')
                             ext=1;

Expected Outputs For Cash Withdrawal:

                             //CASH DEPOSITE

     case 3:
          while (ext3!=3)
          {
                   printf("Enter an amount\n");
                   scanf("%d",&amount3);
                   if (amount3>amount4)
                   {
                        printf("Entered amount is greater then %d\n",amount4);
                             continue;
                              }
                              else if (amount3%500!=0)
                              {
                               printf("Entered amount should be multiple of 500\n");
                                       continue;
                              }
                              else
                              {
                             intial_amount=intial_amount+amount3;
                    printf("Your amount has been deposited\n");
                    printf("Your current balance = %d\n",intial_amount);
printf("Do you want more Deposite Transaction? Press Y for Yes or N for No\n");
                    scanf("%s",&opt2);
                    if (opt2=='Y'&&opt=='y')
                    {
                             continue;
                             }
                             else if (opt2=='N'&&opt2=='n')
                             break;
                              }
                    }
                  printf("Press A to return to main menu or enter B to Exit\n");
                             scanf("%s",&s);
                             if (s=='A'&&s=='a')
                             continue;
                             else if(s=='B'&&s=='b')
                             ext=1;

Expected Outputs For Cash deposit:

                    //Pin change

          case 4:

                   while (ext4=4)

                   {

                             printf("Enter old pin\n");

                             scanf("%d",&old_pin);

                             if (old_pin!=pin)

                             {

                                      printf("Invalid try again\n");

                                      continue;

                                       }

                                       else

                                       {

                                                printf("Enter new pin\n");

                                                scanf("%d",&new_pin1);

                                                while (ext5=5)

                                                {

                                                printf("Enter new pin again \n");

                                                scanf("%d",&new_pin2);

                                                if (new_pin2!=new_pin1)

                                                {

                                                printf("Error!!! Enter second pin again\n");

                                                continue;

                                                 }

                                                 else

                                               {

                                                  pin=new_pin1;

                                                  printf("Pin changed successfully\n");

                                                 break;

                                            }

                                       }

                                       }

                             break;

                              }

                   printf("Press A to return to main menu or enter B to Exit\n");

                             scanf("%s",&s);

// condition to repeat the procedure

                             if (s=='A' && s=='a')

                             continue;

                             else if(s=='B' && s=='b')

                             ext=1;

Expected Outputs For pin change:

                             //Exit

                              case 5:

                              printf("Thanks, Allah Hafiz, Please Take Your Card");

                              exit(0); 

          }

Expected Outputs For Exit:

   }

getchar();

return 0;

}