Solved

Compilation Errors

Posted on 2006-07-18
7
256 Views
Last Modified: 2010-04-15
warning: unused variable `fp'
Even though I am using the fp variable
 fp=fopen("Reader.xml", "rb");
fgets(Buff, sizeof(Buff), fp);
Anyone know why...
0
Comment
Question by:sudarshantk
7 Comments
 
LVL 22

Expert Comment

by:grg99
ID: 17132331
Try turning off optimization, soemtimes the compiler is too clever.

Also make sure that code is reachable, and not accidentally in a comment or #ifdef or a if( 0 )

0
 
LVL 16

Expert Comment

by:PaulCaswell
ID: 17132798
Hi sudarshantk,

FILE * fp; // Will cause a warning.

...

{
  FILE *fp;
  ...
  fp=fopen("Reader.xml", "rb");
  fgets(Buff, sizeof(Buff), fp);
 
}

Perhaps you could post a little more code.

Paul
0
 
LVL 13

Expert Comment

by:marchent
ID: 17159187
i din't see any complie error on my VC. by the way try with adding this line on your code for initialization.

FILE *fp=NULL;

regards
marchent
0
 
LVL 3

Accepted Solution

by:
DineshJolania earned 50 total points
ID: 17239844
Simply , the code is unreachable. That might happen in several ways.
1) You may be returning well before fopen.
2) You might not be calling the function which was not called at all.
3) As above said by grg99
0
 

Author Comment

by:sudarshantk
ID: 17447404
Thanks
0

Featured Post

Better Security Awareness With Threat Intelligence

See how one of the leading financial services organizations uses Recorded Future as part of a holistic threat intelligence program to promote security awareness and proactively and efficiently identify threats.

Join & Write a Comment

This tutorial is posted by Aaron Wojnowski, administrator at SDKExpert.net.  To view more iPhone tutorials, visit www.sdkexpert.net. This is a very simple tutorial on finding the user's current location easily. In this tutorial, you will learn ho…
This is a short and sweet, but (hopefully) to the point article. There seems to be some fundamental misunderstanding about the function prototype for the "main" function in C and C++, more specifically what type this function should return. I see so…
The goal of this video is to provide viewers with basic examples to understand and use structures in the C programming language.
Video by: Grant
The goal of this video is to provide viewers with basic examples to understand and use nested-loops in the C programming language.

747 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

12 Experts available now in Live!

Get 1:1 Help Now