FirstPerson at 23:33, 25 June 2010

2010-06-25T23:33:45Z

Daviddoria: Created page with '==FunctionPointer.cpp== #include using namespace std; void add(int a, int b); void DoThing(void (*pt2Func)(int,int)); int main(int argc, char …'

2010-06-23T12:16:30Z

Created page with '==FunctionPointer.cpp== <source lang="cpp"> #include <iostream> using namespace std; void add(int a, int b); void DoThing(void (*pt2Func)(int,int)); int main(int argc, char …'

New page

==FunctionPointer.cpp==
<source lang="cpp">
#include <iostream>

using namespace std;

void add(int a, int b);
void DoThing(void (*pt2Func)(int,int));

int main(int argc, char *argv[])
{
DoThing(add);

return 0;
}

void add(int a, int b)
{
cout << a+b;
}

void DoThing(void (*pt2Func)(int,int))
{
pt2Func(2,3);
}
</source>

@@ Line 1: / Line 1: @@
-==FunctionPointer.cpp==
+<source lang = "cpp">
 <source lang="cpp">
 #include <iostream>
 using namespace std;
-void add(int a, int b);
+int add(int a, int b)      { return a + b;  }
-void DoThing(void (*pt2Func)(int,int));
+int subtract(int a, int b) { return a - b;  }
+int multiply(int a, int b) { return a * b;  }
-int main(int argc, char *argv[])
+int divide(int a, int b)   { return a / b ; }
-−
-  DoThing(add);
-−
-   return 0;
-−
-void add(int a, int b)
+//to make syntax easier, use typedef for a function pointer
+//AritmaticFunctionPointer is a pointer function that takes a function with a int return value with 2 int parameter
-  cout << a+b;
+typedef int (*ArithmaticFunctionPointer)(int,int);
+}
-void DoThing(void (*pt2Func)(int,int))
+	cout <<"Enter 2 number : " ;
+	cin >> a >> b;
-  pt2Func(2,3);
+}
 </source>

CPP/FunctionPointer - Revision history

FirstPerson at 23:33, 25 June 2010

Daviddoria: Created page with '==FunctionPointer.cpp== #include using namespace std; void add(int a, int b); void DoThing(void (*pt2Func)(int,int)); int main(int argc, char …'