The Gateway to Computer Science Excellence
First time here? Checkout the FAQ!
x
+2 votes
139 views
#include

int main()

{

char *x;

x = (char *) &a;

a = 512;

x[0] = 1;

x[1] = 2;

printf("%d\n",a);

return 0;

}

What is the output of above program?

(a) Machine dependent

b) 513

(c) 258

(d) Compiler Error
asked in Programming by Veteran (14.8k points) | 139 views
Obvio it will be compilation error , you are using undeclared a
............................

1 Answer

+1 vote

Assuming a is declared first.

  • In a system that uses little-endian (Like  Intel x86 processors ) the answer should be $513$
  • In a system that uses big-endian (Like IBM z/Architecture mainframes ) the answer should be a very large value.

 Answer should be (a) Machine dependent

answered by Veteran (57.5k points)
debashish,how do u know that it is endian notation??
and if  'a' is a int variable then how will x[0] and x[1] work??

i mean a is an integer type variable,so what will be x[0] or x[1] refer to??

@Akriti

A prerequisite to know what is happening https://gateoverflow.in/4273/char-pointer-to-access-an-int

thanks @kapil..


Quick search syntax
tags tag:apple
author user:martin
title title:apple
content content:apple
exclude -tag:apple
force match +apple
views views:100
score score:10
answers answers:2
is accepted isaccepted:true
is closed isclosed:true

29,101 questions
36,904 answers
91,826 comments
34,770 users