C++ calling functions from an array of functions

Question

Sorry I'm totally new to C++ just started this semester. I have a question though. I know javascript some what well and I love how loose it is as a programming language. (It's both a good and a bad thing.) But there is one thing you can do in javascript that I'm not sure if you can do in c++.

I want to call some functions from an array of functions here is a link of that done in javascript. Javascript Array of Functions. My idea is to write a for loop that will go through functions in the order I want. (from first to last.) If there is an alternative to this I will be fine with that. I could even name the functions with a number after them like function1 for example if that might help. I'm not sure if this is possible, but any help or anything would be awesome thanks.

Yes! This is possible with the [function pointer](http://en.wikipedia.org/wiki/Function_pointer) — yizzlez, Feb 05 '14 at 01:55

score 3 · Accepted Answer · answered Feb 05 '14 at 01:56

3

Do you talk about "function pointer"?

void f1() { .. }
void f2() { .. }
void f3() { .. }

typedef void (*pf)();

pf arf[3] = { f1, f2, f3 };

arf[0]();

answered Feb 05 '14 at 01:56

ikh

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score 2 · Answer 2 · answered Feb 05 '14 at 02:11

If you don't want to use the function pointer

struct parent
{
   virtual void f();
}

struct child1 : parent
{
  void f(){};
}

struct child2 : parent
{
  void f(){};
}

struct child3 : parent
{
  void f(){};
}

.
.
.

struct childn : parent
{
  void f(){};
}


parent array = {child1,child2,child3,.....,childn};

array[n].f();

each child classes will contain different implementations of f(), so you can 

create an array of child structs and invoke the methods through the for loop.

C++ calling functions from an array of functions

2 Answers2