[HELP] ATM algorithm and pseudo-code.

[toobig4u]

Write your question here.
Hey folks,
I've just started a CS class, and i need help with this material.
I accept any feedback and advice to complete this assessment.

[Tasks]

https://imgur.com/a/jwHrmhR

What I did so far:

      Task 1 – Problem Decomposition
    
    a)
    
    b)
    PROGRAM <ATM_WITHDRAWAL>
    1.	DISPLAY 'Enter amount to withdraw’;
    2.	INPUT amount;
    3.	READ balance;
    4.	dispense cash amount;
    5.	balance = balance – amount;
    6.	DISPLAY 'Your balance is’, balance;
    END
    Task 2
    
    PROGRAM <ATM_WITHDRAWAL>
    1.	IF card inserted
    2.	        DISPLAY 'Enter amount to withdraw’;        
    3.	        INPUT amount;
    4.	        READ balance;
    5.	        dispense cash amount;
    6.	        balance = balance – amount;
    7.	        DISPLAY 'Your balance is’, balance;
    8.	ENDIF
    END
    
    Task 3
    a)
    DECLARE integer correctPIN ;
    DECLARE integer pin;
    b)
    
    PROGRAM <ATM_WITHDRAWAL>
    1.	DECLARE boolean valid ;
    2.	DECLARE integer correctPIN ;
    3.	DECLARE integer pin;
    4.	SET valid = false ;
    5.	IF card inserted
    6.	DO
    DISPLAY ‘Enter your PIN’;
    INPUT pin;
    READ correctPIN;
    IF pin = correctPIN
    valid = true;
    ENDIF
    7.	WHILE valid = false;
    8.	ENDIF
    9.	DISPLAY 'Enter amount to withdraw’;
    10.	INPUT amount;
    11.	READ balance;
    12.	dispense cash amount;
    13.	balance = balance – amount;
    14.	DISPLAY 'Your balance is’, balance;