C # pass by value

Question

Hi guys, just wondering, take the following example.

public void main()
{

   int x = 1;

   Foo(x);
}

public void Foo(int y)
{
    y = 5;
}

We know that C # arguments are passed by value for value types. Does this mean that in the above example, I have 2 copies on the stack, one for x and one for y ??

thank

Answer 1

Yes, there will be two independent variables on the stack. They will also be in two different frames of the stack: one for mainand one for foo(in the absence of insertion). When fooreturned, the value xwill still be 1, not 5.

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Answer 2

- x main, y Foo.

Answer 3

For more information, you also need to understand how parameter values ​​are passed. The reason that y in Foo does not affect x in Main is because they are in different frames of the stack. More information about the parameters of the data transfer type HERE .