a. is the amount and the balance the same? yes or no, why? class CheckingAct {   . . . .   private int    balance;     public void processCheck( int  amount )   {                              int amount;          incrementUse();     if ( balance < 100000 )       amount = 15;                    // which amount ???     else       amount = 0;                     // which amount ???       balance =  balance -  amount ;    // which amount ???   } }               b. is the balance the same? yes, no? why?   class CheckingAct {   . . . .   private int balance;     . . . .   public void processDeposit( int amount )   {     int balance = 0;                // New declaration of balance.     balance = balance + amount ;    // This uses the local variable, balance.   } }

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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a. is the amount and the balance the same? yes or no, why?

class CheckingAct

{

  . . . .

  private int    balance;

 

  public void processCheck( int  amount )

  {                         

    int amount;   

 

    incrementUse();

    if ( balance < 100000 )

      amount = 15;                    // which amount ???

    else

      amount = 0;                     // which amount ???

 

    balance =  balance -  amount ;    // which amount ???

  }

}

 

 

 

 

 

 

 

b. is the balance the same? yes, no? why?

 

class CheckingAct

{

  . . . .

  private int balance;

 

  . . . .

  public void processDeposit( int amount )

  {

    int balance = 0;                // New declaration of balance.

    balance = balance + amount ;    // This uses the local variable, balance.

  }

}

 

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