Interested to Buy Any Domain ? << Click Here >> for more details...
what is the advantage of function pointer
- 16 Answers
- 75078 Views
- CMC, CS, Freshdesk, L&T, LG Soft, Matrix, TCS, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / dwight schrute
suppose u have 2 files:
file1 has following functions:
A1
B1
C1
file12 has following functions:
A2
B2
C2
scenario:
A1 needs to use A2 in turn A2 needs to use B1.
A1 invokes A2;
A2 invokes B1;
for B1 to be available in file2 either shld be extern or in
header file which in turn exposes it to entire file2.
In order to minimize this exposure "pass B1 as a functional
pointer to A2".
| Is This Answer Correct ? | 4 Yes | 1 No |
Answer / chikani sagar
TO implement call back functions......It is more efficient.
code complexity will be redused.....
| Is This Answer Correct ? | 3 Yes | 1 No |
Answer / sanjeeva rao
It is useful when you want to send function as argument to
another function. And to implement the call back functions in multi-threading programming.
| Is This Answer Correct ? | 1 Yes | 1 No |
Answer / tahir ali
As you probably learned in your first programming courses,
pointers to variables allows you to modify variable contents
from a non-local environment. This gives the flexibility of
writing generic functions which do not alter "known" global
variables, but references to "unknown" variables. Such
functions can be reused. Function pointers gives you the
same flexibility, but at a higher level. Instead of calling
a "known" function, one can call any arbitrary "unknown"
function. This is the main advantage of function pointers:
greater flexibility and better code reuse.
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / sudeep reddy
function pointers can be used to replace switch/if
statements,to realize late binding(virtual function tables)
or to implement callback function primitives.
| Is This Answer Correct ? | 0 Yes | 0 No |
What is diffrance between declaration and defination of a variable or function
What is memmove?
program to find error in linklist.(i.e find whether any node point wrongly to previous nodes instead of next node)
When I tried to go into a security sites I am denied access and a message appeared saying 'applet not initialize'. How can I rectify this problem.
Write a C program that will accept a hexadecimal number as input and then display a menu that will permit any of the following operations to be carried out: Display the hexadecimal equivalent of the one's complement. (b) Carry out a masking operation and then display the hexadecimal equivalent of the result. (c) Carry out a bit shifting operation and then display the hexadecimal equivalent of the result. (d) Exit. If the masking operation is selected, prompt the user lor the type of operation (bitwise and, bitwise exclusive or, or bitwise or) and then a (hexadecimal) value for the mask. If the bit shifting operation is selected. prompt the user for the type of shift (left or right), and then the number of bits. Test the program with several different (hexadecimal) input values of your own choice.
What is difference between scanf and gets?
A global variable when referred to in another file is declared as this a) local variable b) external variable c) constant d) pointers
what will be the out put. #include<stdio.h> void main() { printf("Output:"); printf(1+"vikashpatel"); }//output: ikashpatel
What is c method?
What is the easiest sorting method to use?
what are the uses of structure?
What does the function toupper() do?
C 
