Thread: strings to function

Hi i am wondering if it is possible to get a string to be converted into a function such as below:

Code:

function ("Update");

void function(string FunctionToCall)
{
**Do something**
 pTr-> FunctionToCall();
};

the only other solution i could thing of is by doing a large switch statement and call the appropriate one by name

Thank you

i am trying to write a messaging system that could pass a string to say what function needs to be called. Typically i would like it to say

Code:

function("Car","StartEngine")

function(string type, string function)
{
   (type*)Ptr->function;
}

an example could be a driver turns the car on but the driver doesnt have a pointer to the car so a messaging system could send a message to the car to say turn on.

thank you.

Originally Posted by dudecooper123

i am trying to write a messaging system that could pass a string to say what function needs to be called. Typically i would like it to say

Code:

function("Car","StartEngine")

function(string type, string function)
{
   (type*)Ptr->function;
}

an example could be a driver turns the car on but the driver doesnt have a pointer to the car so a messaging system could send a message to the car to say turn on.

thank you.

Why don't you pass a pointer to a function in the first place? Might not be possible for you, but it usually is.

I think to use that method the driver would have to have access to the car to get the function. so i dont think that would work. i will have a go at this later though.

Thank you

yeah really. Its going to be used for a game and the rest of the code is done within c++. Its a shame c++ is not more like c#

Code:

#include <iostream>

using namespace std;


string func1 ()
{
       string name;
       getline (cin,name);
       cout << name << endl;
       return name;
}




string func2 (string x);



////////////////////// main here we start//
int main ()                              //
{                                        //
    string name_in_main;                 //
                                         //
    name_in_main = func1 ();             //
                                         //
                                         //
                                         //
    func2 (name_in_main);                //
                                         //
    return 0;                            //
}                                        //
///////////////////////////////////////////




string func2 (string nameq)
{
      cout << nameq << endl;
      getline (cin,nameq);
      cout << nameq << endl;
}

I have just written for you

copy and paste in your compiler

and tell me if this is what you were looking for


well here you can use more than 1 word as I used

Code:

getline (cin,"string")

instead of

Code:

cin >> "string";

you can use

Code:

cin >> "string";

too if you wish

no sorry, something like this would be good where nothing need to know about anything else but the message system,

Code:

class Car()
{
	void StartCar()
	{

	}
}


class Driver()
{
	void TurnKey()
	{
		MsgSystem->sendMessage("Car","StartCar");
	}
}


class MsgSystem()
{

	int * Pointer = NULL;

	void sendMessage(string Type, string Function)
	{
		(type*)Pointer->Function; 
	}
}

i think i going to try look at how windows messaging works

Thanks

Originally Posted by dudecooper123

i think i going to try look at how windows messaging works

Thanks

Well, we wish you the best of luck.

cheers for your help guys, hope i get it sorted