Function pointers?

Question

Hey I have some code in C that I would like to get working in C#. Im assuming its possible using delegates however im not quite sure how. The code I would like to get working is something like: int ( *function )(); so that I could now do int retVal = (*function) ( test ); int test ( ) { return ( 5 ); } I hope this is clear enough. Thanks in advance.

kyle_hankinson · Answer

Hey this works great. Thanks for the help :D

Mykonine · Answer

Oops made a mistake. The declaration of the delegate should be: public delegate int TestDelegate(int n); in order for the signature of the delegate type and the function/method to match.

Mykonine · Answer

Ok so my understanding of this is that you are trying to call a method through a function pointer. First you declare a delegate type for example public delegate int TestDelegate(); Then in the code itself... public static void Main() { TestDelegate functionPointer = new TestDelegate(test); Console.WriteLine(foo(test)); } string foo(TestDelegate t) { return t(5).ToString(); } int test(int someNumber) { return someNumber; } This code: 1. Initializes an instance of TestDelegate to point to the test function. 2. Passes the pointer to the foo method 3. Calls test through the TestDelegate instance passed as a parameter In the end the code should output 5 on the console.