10. Struct Code

- C++ struct 

#include <iostream> // 구조체, 접근방법, 할당

using namespace std;

struct Accnt{
	int number;    // 계좌번호
	char name[10]; // 예금주
	double value;  // 잔액
};

int main()
{
	Accnt p1, p2; //struct Accnt p1, p2; 

	//입력
	cout << "ID=? ";
	cin >> p1.number;

	cout << "Name=? ";
	cin >> p1.name;

	cout << "Balance=? ";
	cin >> p1.value;

	p2 = p1;

	//출력
	cout << "ID= "<< p2.number << endl;
	cout << "Name= "<< p2.name << endl;
	cout << "Balance= "<< p2.value << endl;

	return 0;
}

 

- Function & struct

#include <iostream> // 함수의 매개변수, 리턴값
       // 함수의 레퍼런스

using namespace std;

struct Accnt{
 int number;  //계좌번호
 char name[10]; //예금주
 double value; //잔액
};      // } p1, p2;

//void Input_Accnt(Accnt &p);
Accnt Input_Accnt();
void output_Accnt(Accnt p);

int main()
{
 Accnt p1, p2; // struct Accnt p1, p2;

 //입력
 //Input_Accnt(p1);
 p1 = Input_Accnt();

 p2 = p1;

 //출력
 output_Accnt(p2);

 return 0;
}

//void Input_Accnt(Accnt &p) // call-by-reference
Accnt Input_Accnt()
{
 Accnt p;

 cout << "ID = ?";
 cin >> p.number;
 
 cout << "Name = ?";
 cin >> p.name;
 
 cout << "Balance = ?";
 cin >> p.value;

 return p;
}

void output_Accnt(Accnt p)
{
 cout << "ID = " << p.number << endl;
 cout << "Name = " << p.name << endl;
 cout << "Balance = " << p.value << endl;
}

 

- struct function

#include <iostream> // 구조체 + 입력, 출력 추가
       
using namespace std;

struct Accnt{
	int number;  //계좌번호
	char name[10]; //예금주
	double value; //잔액

	void Input_Accnt(){
		cout << "ID = ?";
		cin >> number;	// cin >> p1.number; 오류:구조체 정의에 구조체 특정변수를 포함
		cout << "Name = ?";
		cin >> name;
		cout << "Balance = ?";
		cin >> value;
	}

	void add_value(int a){
		value += a;
	} 

	int get_value(){
		return value;
	}

	void output_Accnt(){
		cout << "ID = " << number << endl;
		cout << "Name = " << name << endl;
		cout << "Balance = " << value << endl;
	}
};      

int main()
{
	Accnt p1, p2; // struct Accnt p1, p2;

	//입력
	p1.Input_Accnt();
	p2.Input_Accnt();
 
	//잔액 증가
	int a=50;
	p1.add_value(a);

	//잔액 가져오기
	int b;
	b=p1.get_value();
	cout << b << endl;
	//출력
	p1.output_Accnt();
	p2.output_Accnt();

 return 0;
}