C#/수업내용
0312 클래스+메서드
피주빈
2021. 3. 12. 10:55
out parameter
class Program
{
static void Main(string[] args)
{
int x;
Multiplication(out x);
Console.WriteLine("Variable Value: {0}", x);
Console.WriteLine("Press Enter Key to Exit..");
Console.ReadLine();
}
public static void Multiplication(out int a)
{
a = 10;
a *= a;
}
}
ref parameter
class Program
{
static void Main(string[] args)
{
int x = 10;
Console.WriteLine("Variable Value Before Calling the Method: {0}", x);
Multiplication(ref x);
Console.WriteLine("Variable Value After Calling the Method: {0}", x);
Console.WriteLine("Press Enter Key to Exit..");
Console.ReadLine();
}
public static void Multiplication(ref int a)
{
a *= a;
Console.WriteLine("Variable Value Inside the Method: {0}", a);
}
}
params keyword = 배열 / 세트
int[] arr={1,2,3,4,5,6};
class Program
{
static void Main(string[] args)
{
ParamsMethod1(1, 2, 3, 4, 5, 6);
ParamsMethod2(1, 2, 3, 4, 5, 6);
ParamsMethod3(1, 2, "홍길동", "임꺽정", 10.24, new Unit());
}
public static void ParamsMethod1(int a, int b, int c, int d, int e, int f)
{
Console.WriteLine(a);
}
public static void ParamsMethod2(params int[] arr)
{
Console.WriteLine(arr[0]);
}
public static void ParamsMethod3(params object[] arr)
{
object obj = arr[5];
Unit unit = (Unit)obj; //object를 호출하고 싶으면 언박싱 해줘야 함
}
}