C#改變形參內容

1.ref 參數

int A=100;
add1(ref A)
public int add1 (ref int x)
{x = x +10;return x;
}

2.out 參數

int A=100;
int B=200;
int Z;
add3(A,B, out Z)
public int add3 (int x，int y，int z)
{z = x + y;return z;
}