Question

In C++, I have a function:

void MyFunction(int p)
{
    p=5;
}

Assume, I have:

int x = 10;
MyFunction(x); // x = 10
MyFunction(&x); // x = 5

How to archieve this in C# with condition: I create only one MyFunction.

Answer 1

Your C++ function doesn’t work the way you think it does. In fact, your code will not compile.

In C#, you would use the ref or out keywords:

void MyFunction1(out int p)
{
    p = 5;
}

void MyFunction2(ref int p)
{
    p = p + 1;
}

int x;
MyFunction1(out x); // x == 5
MyFunction2(ref x); // x == 6