c++ program of inheritance

Assume that a bank maintains two kinds of accounts for customers, one called as savings account and the other as current account. The savings account provides compound interest and withdrawal facilities but no cheque book facility. The current account provides cheque book facility but no interest. Current account holders should also maintain a minimum balance and if the balance falls below this level, a service charge is imposed. Create a class account that stores customer name, account number and type of account. From this derive the classes curacct and savacct to make them more specific to their requirements. Include necessary member functions in order to achieve the following tasks: (a) Accept deposit from a costumer and update the balance.

(b) Display the balance

(d) Permit withdrawal and update the balance.

Check for the minimum balance, impose penalty, necessary, and update the balance.

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April 27, 2012 at 5:34 PM

#include<iostream.h>
#include<stdio.h>
#include<math.h>
#include<conio.h>
#include<string.h>

class account{

protected:
      char cname[20];
      int accno;
      char type;
      int bal;
public:
      account()
      {
        strcpy(cname," ");
        accno=0;
        type=' ';
        bal=0;
      }
      void input(){
        cout<<"Enter cname";cin>>cname;
        cout<<"Enter accno";cin>>accno;
        fflush(stdin);
        cout<<"Enter type"; cin>>type;
        fflush(stdin);
        cout<<"Enter bal";cin>>bal;
      }
      void display(){
            cout<<"\n Customer Name "<<cname;
            cout<<"\n Account Number "<<accno;
            cout<<"\n Type "<<type;
            cout<<"\n Balance "<<bal;
      }
      void deposit(){
            int amt;
            cout<<"\n Enter the amount to deposit";
            cin>>amt;
            bal=bal+amt;
      }
};
class savacct:public account{
      int inter;
      public:

      int comp_int(){
         int time1,rate1;
         rate1=10;
         cout<<"\n Enter time";cin>>time1;
         inter=bal*pow(1+rate1/100.0,time1)-bal;
         return inter;
      }

      void update_bal(){
         bal=bal+comp_int();
      }

      void withdrawal(){
         int amt;
         cout<<"\n Enter amount to withdrawn";
         cin>>amt;
         if(bal>=amt){
               bal=bal-amt;
         }
         else{
               cout<<"\n The amount cannot be withdrawn";
         }
      }
  };

class curacct:public account{
       int chq_bk;
       int penal;
       public:

       int min_bal(){
          int ret1=1;
          if(bal<=500){
             penal=50;
             bal=bal-penal;
             ret1=0;
          }
          else{
             cout<<"\n No penality imposed";
          }
          return ret1;
      }
      void withdrawal(){
          int amt;
          cout<<"\n Enter the amount to withdrawn";
          cin>>amt;
          int k=min_bal();
          if(k==1){
             if(bal>=amt)
             bal=bal-amt;
          }
          else{
              cout<<"\n The amount cannot be withdrawn";
          }
      }
   };

void main(){
      curacct c1;
      savacct s1;
      c1.input();
      c1.display();
      c1.deposit();
      c1.display();
      c1.withdrawal();
      c1.display();
      s1.input();
      s1.display();
      s1.deposit();
      s1.display();
      s1.withdrawal();
      s1.display();
}