Function pointers?

kyle_hankinson

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.

3 Replies

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kyle_hankinson22y ago
Hey this works great. Thanks for the help :D
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Mykonine22y ago
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.
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Mykonine22y ago
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 testthrough the TestDelegate instance passed as a parameter In the end, the code should output "5" on the console.
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