To which does the function pointer point to?

The function pointer will point to which of the following?

(A) function
(B) constants
(C) variable
(D) absolute variables

Example of the Program in C++

    #include <iostream>  
    using namespace std;  
    int Sum(int num1 , int num2)  
    {  
        return num1+num2;  
    }  
    int main()  
    {  
     int (*Function_Pointer)(int,int);  
	 // function pointer declaration  
     Function_Pointer=Sum; 
	 // Function_Pointer is pointing to the Sum function  
     int sum=Function_Pointer(3,4);  
     std::cout << "value of sum is:" <<sum<< std::endl;  
      return 0;  
    }

#include <iostream>

using namespace std;

int Sum(int num1 , int num2)

{

return num1+num2;

}

int main()

{

int (*Function_Pointer)(int,int);

// function pointer declaration

Function_Pointer=Sum;

// Function_Pointer is pointing to the Sum function

int sum=Function_Pointer(3,4);

std::cout << "value of sum is:" <<sum<< std::endl;

return 0;

}

Output

value of sum is:7

Example of the Program in C

#include<stdio.h>

// function declaration
int Rectangle(int, int);

int main() {
    int length, breadth, area;
    int (*Area_function_pointer)(int, int); 
    
    printf("Enter the length and breadth of a rectangle\n");
    scanf("%d%d", &length, &breadth);
    
    // pointing the pointer to functions memory address
    Area_function_pointer = Rectangle;
    
    // calling the function using function pointer
    area = (*Area_function_pointer)(length, breadth); 
    
    printf("Area of rectangle = %d", area);
    return 0;
}

// function definition 
int Rectangle(int x, int y) {
    int area_of_rectangle = x * y;
    return area_of_rectangle;
}

#include<stdio.h>

// function declaration

int Rectangle(int, int);

int main() {

int length, breadth, area;

int (*Area_function_pointer)(int, int);

printf("Enter the length and breadth of a rectangle\n");

scanf("%d%d", &length, &breadth);

// pointing the pointer to functions memory address

Area_function_pointer = Rectangle;

// calling the function using function pointer

area = (*Area_function_pointer)(length, breadth);

printf("Area of rectangle = %d", area);

return 0;

}

// function definition

int Rectangle(int x, int y) {

int area_of_rectangle = x * y;

return area_of_rectangle;

}

Output

Enter the length and breadth of a rectangle
6
7
Area of rectangle = 42

Highly Recommended C++ Important MCQs with Explanation

Example of the Program in C++

Example of the Program in C

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