Answers: Classes Homework

1.    class Checking
      {
      public:
         void open(int,float);
         void writecheck(float);
         void deposit(float);
         void display();
      private:
         int acctnum;
         float balance;
      };
   

2.    #include 
      #include "Checking.h"
      void Checking::open(int anum, float bal)
      {
         acctnum = anum;
         balance = bal;
      }
      void Checking::writecheck(float amt)
      {
         balance -= amt;
      }
      void Checking::deposit(float amt)
      {
         balance += amt;
      }
      void Checking::display()
      {
         cout << "Account Number: " << acctnum << endl;
         cout << "Balance:        " << balance << endl;
      }
   

3.    #include "Checking.h"
      int main()
      {
         Checking one, two;
         one.open(2345,1500);
         two.open(9876,4200);
         one.writecheck(835);
         one.writecheck(284);
         one.deposit(1450);
         one.display();
         two.deposit(720);
         two.writecheck(2279);
         two.display();
      }
   

4.    class Checking
      {
      public:
         Checking();
         Checking(int,float);
         void writecheck(float);
         void deposit(float);
         void display();
      private:
         int acctnum;
         float balance;
      };
      Checking::Checking()
      {
         acctnum = 1111;
         balance = 0;
      }
      Checking::Checking(int anum, float bal)
      {
         acctnum = anum;
         balance = bal;
      }
   

5.    #include "Checking.h"
      int main()
      {
         Checking accounts[5] = {Checking(2345,1500),Checking(9876,4200)};
         accounts[0].writecheck(835);
         accounts[0].writecheck(284);
         accounts[0].deposit(1450);
         accounts[0].display();
         accounts[1].deposit(720);
         accounts[1].writecheck(2279);
         accounts[1].display();
      }
   

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