TechnoLabsz: July 2013

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Wednesday, July 10, 2013

C++ Tips : Pointer to a Function

Program showing the usage of Function Pointer

 /*  
 name : main.cpp  
 Calling a function using function pointer  
 */  
 #include <stdio.h>  
 int main()  
 {  
      int display();  
      int (*func_ptr)();        ///Declare function Pointer  
      func_ptr = display;        /// Assign address of function  
      printf("\n Address of function display is %u", func_ptr);      ///Printing Address of function  
      (*func_ptr)();          /// Invokes the function display  
      getchar();            ///Get char for seeing the output  
      return 0;  
 }  
 int display()  
 {  
      puts("\n Hello World !!\n");  
      return 1;  
 }

Output
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