1. 은행계좌 ¶
- 은행계좌에 대한 정보를 입출력하는 class를 만들어 활용해본다.
- class CDaccount 멤버변수
- double balance;//현재잔액
- double interestRate; // 연 이자율 (%) * int term;//만기까지몇달인지나타냄
- 그외 필요한 멤버변수 추가
- double balance;//현재잔액
- class CDaccount 멤버함수
- private 멤버변수 입출력을 위한 함수 정의
- void input(); // 내용을 키보드로 입력. balance와 term을 키보드로 입력받는다. 이자율은 main()함수에서 5%로 할당
- double getMaturedBalance(); //term 동안의 이자를 단리로 계산하여 만기시의 금액을 리턴
- 그 외 필요한 멤버함수
- private 멤버변수 입출력을 위한 함수 정의
- 입력 에러 확인
- private 멤버변수의 입력을 위한 멤버함수에서 에러를 확인할 수 있다.
- 예) balance는 0보다 큰 숫자이다.
- int SetBalance(double b) 멤버함수를 정의:
- b가 0보다 크면 값을 update하고 1을 리턴, 아니면 0을 리턴
- input()에서 위 함수 호출하여 리턴값이 0이면 다시 입력받음
- private 멤버변수의 입력을 위한 멤버함수에서 에러를 확인할 수 있다.
- class CDaccount 멤버변수
2. 코드 제출 ¶
- 김한성
#include<iostream> class CDaccount{ public: CDaccount(double balance, double interestRate, int term); void input(); // balance, term을 키보드로 입력받음 double getMaturedBalance(); // term 동안의 이자를 단리로 계산하여 만기시의 금액을 리턴 double getBalance(); double getInterestRate(); int getTerm(); int setBalance(double balance); void setInterestRate(double intersetRate); void setTerm(int term); private: double balance; //잔액 double interestRate; //이자율(%) int term; //기간 }; int main(){ CDaccount account(0,0.05,0); account.input(); return 0; } CDaccount::CDaccount(double balance, double interestRate, int term){ this->balance = balance; this->interestRate = interestRate; this->term = term; } void CDaccount::input(){ double balance; int term; int i; while(1){ std::cout << "Enter the balance(upto 0): "; std::cin >> balance; if(setBalance(balance) == 1){ break; } } while(1){ std::cout << "Enter the term: "; std::cin >> term; if(term > 0){ setTerm(term); break; } } std::cout << "Matured balance: " << getMaturedBalance() <<" (Interest Rate: 5%)\n"; } double CDaccount::getMaturedBalance(){ return balance*(1+interestRate/12*term);; } double CDaccount::getBalance(){ return balance; } double CDaccount::getInterestRate(){ return interestRate; } int CDaccount::getTerm(){ return term; } int CDaccount::setBalance(double balance){ if(balance > 0){ this->balance = balance; return 1; } else{ return 0; } } void CDaccount::setInterestRate(double interestRate){ this->interestRate = interestRate; } void CDaccount::setTerm(int term){ this->term = term; }
- 송치완
// // main.cpp // CDaccount // // Created by Chiwan Song on 2014. 9. 15.. // Copyright (c) 2014년 Chiwan Song. All rights reserved. // #include <iostream> using namespace std; class CDaccount{ private: double balance; double interestRate; int term; int checkPositive(double value); int checkPositive(int value); public: void input(); double getMaturedBalance(); void setRate(double rate); }; int main(int argc, const char * argv[]){ CDaccount myAccount; double interestRate=5.0; myAccount.input(); myAccount.setRate(interestRate); cout<<"Matured Balance: $"<<myAccount.getMaturedBalance()<<" (Interest rate: "<<interestRate<<"%)\n"; return 0; } int CDaccount::checkPositive(double value){ if(value<=0) return 1; else return 0; } int CDaccount::checkPositive(int value){ if(value<=0) return 1; else return 0; } void CDaccount::input(){ do{ cout<<"Please enter balance: "; cin>>balance; if(balance<=0) cout<<"BALANCE SHOULD BE BIGGER THAN 0\n"; }while(checkPositive(balance)); do{ cout<<"Please enter term: "; cin>>term; if(term<=0) cout<<"TERM SHOULD BE BIGGER THAN 0\n"; }while(checkPositive(term)); } double CDaccount::getMaturedBalance(){ return balance+(balance*interestRate*term/12); } void CDaccount::setRate(double interestRate){ this->interestRate=interestRate/100; }
- 추성준
#include <iostream> using namespace std; class CDaccount { double balance; double interestRate; int term; int SetBalance(double); public: void input(); void putIntersetRate(int); double getMaturedBalance(); }; int CDaccount::SetBalance(double input_Balance){ if (input_Balance > 0) { this->balance = input_Balance; return 1; } else { return 0; } } void CDaccount::input() { double input; while(true) { cout << "Enter the balance: "; cin >> input; if (this->SetBalance(input)==0) { continue; } else { break; } } cout << "Enter the term: "; cin >> this->term; } void CDaccount::putIntersetRate(int input_interestRate) { this->interestRate = input_interestRate; } double CDaccount::getMaturedBalance(){ return this->balance * this->interestRate * this->term / 100; } int main () { int interestRate = 5; CDaccount account; account.input(); account.putIntersetRate(interestRate); cout << "Matured balance: $" << account.getMaturedBalance() << "(Interst Rate : " << interestRate << "%)"<< endl; return 0; }
- 김성원
#include <iostream> using namespace std; class account{ public: account(double balance, double interestRate, int term); void balanceInput(); //balance를 입력받는 함수 double gerMaturedBalance(); //만기시 이자를 리턴해주는 함수 void termInput(); //term을 입력 받는 함수 void balanceOutput(); //balance를 출력하는 함수 int setBalance(double b); int setTerm(double t); private: double balance; //현재 잔액 double interestRate; //이자율 int term; //만기까지 남은 개월 수 }; int main(){ account me(0,0.05,0); me.balanceInput(); me.termInput(); me.balanceOutput(); return 0; } account::account(double balance, double interestRate, int term){ this->balance = balance; this-> interestRate = interestRate; this-> term = term; } void account::balanceInput(){ cout<<"Input Your Balance."<<endl; cin>>balance; while(setBalance(balance)){ cout<<"Error!! Input Balance Again"<<endl; cin>>balance; } } int account::setBalance(double b){ if(b>0) return 0; else return 1; } int account::setTerm(double t){ if(t>0) return 0; else return 1; } void account::termInput(){ cout<<"Input Term."<<endl; cin>>term; while(setTerm(term)){ cout<<"Error!! Input Term Again"<<endl; cin>>term; } } double account::gerMaturedBalance(){ double val=0; val = balance*(interestRate/12)*term; return val; } void account::balanceOutput(){ cout<<"After "<<term<<"months Your Balance is "<<balance + gerMaturedBalance()<<"(Interest Rate is 5% per Year.)"<<endl; }
* 최다인
// // main.cpp // BankAccount // // Created by MeYou on 2014. 9. 17.. // Copyright (c) 2014년 MeYou. All rights reserved. // #include <iostream> using namespace std; class CDaccount { private: double balance; //The prevent balance of accounts double interestRate; //Interest rate per year (%) int term; //How many months left until expiration int setBalance(double); //Correct an error and update value of balance int setTerm(int); //Correct an error and update value of term void setInterestRate(double); //set value of interest rate public: void input(double); //Receive input of variable's values double getMaturedBalance(); //Return the amount of money when the account expires }; int CDaccount::setBalance(double b) { if (b > 0) { balance = b; return 0; } else { return -1; } } int CDaccount::setTerm(int t) { if (t > 0) { term = t; return 0; } else { return -1; } } void CDaccount::setInterestRate(double r) { interestRate = r; } void CDaccount::input(double r) { double b; int t; do { cout << "Enter the balance : "; cin >> b; } while (setBalance(b) == -1); do { cout << "Enter the term : "; cin >> t; } while (setTerm(t) == -1); setInterestRate(r); } double CDaccount::getMaturedBalance() { return balance + (balance * (interestRate / (double)100 / (double)12 * (double)term)); } int main(int argc, const char * argv[]) { CDaccount myAccount; double interestRate = 5; myAccount.input(interestRate); cout << "\nMatured Balance : $" << myAccount.getMaturedBalance() << " (Interest Rate : " << interestRate << "%)" << endl; return 0; }