//Program tested on Microsoft Visual Studio 2008 - Zahid Ghadialy
//Example showing how callback functions work in C++
#include<iostream>
using namespace std;
int adds(int a, int b)
{
return a+b;
}
int subs(int a, int b)
{
return a-b;
}
int DoIt(int x, int y, int (*c)(int, int))
{
cout<<"DoIt : "<<c(x,y)<<endl;
return 0;
}
int main()
{
DoIt(3,4,adds);
DoIt(4,3,subs);
//subs by another name
int (*minus)(int,int) = subs;
DoIt(4,2,minus);
return 0;
}
Friday, 6 March 2009
Simple example of Callback Functions
Here is a simple example introducing to the concept of callbacks in C++. Function Pointers will be used implicitly in demonstrating this example.
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sample output for this?
ReplyDeleteIt should be something like:
ReplyDeleteDoIt : 7
DoIt : 1
DoIt : 2