Error Reading Db Fgets
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Seg Fault error reading from file with fgets up vote 0 down vote favorite //declare double pointer so that create array can "return" an array int **aryReturn; int size; char trashdata[100]; //open file FILE *inFilePtr = fopen(*(argv + 1), "r" ); if (inFilePtr != NULL) printf(" the value of argv 1 is %s \n", argv[1]); while (fgets(trashdata, sizeof(int) * 10, inFilePtr) != NULL){ fgets(trashdata, 10, inFilePtr); size++; } can anyone tell me why my loop condition will not work! I get a seg fault that says fp(0x0) at fgets. I have tried while (!feof(inFilePtr)) And I basically get the same error, but it says feof is the problem. My file seems to open correctly because the if statement prints.. and argv has the expected file name c fgets share|improve this question edited Feb 24 '14 at 19:42 Oz123 8,865124391 asked Feb 12 '13 at 1:43 SystemFun 502714 First off, why are you calling fgets in the loop body and also in the loop condition? Second, it should append a null character after each call. –Antimony Feb 12 '13 at 1:46 So when I use fgets in a condition, does it still get the data and store it? Also, My error still occurs without it. –SystemFun Feb 12 '13 at 1:49 Do you see the the value of argv[1] message? You should not use inFilePtr if it is NULL; that will lead to crashes. The chances are high that you are failing to open the file. –Jonathan Leffler Feb 12 '13 at 1:50 When you call fgets(), it stores the data into the string (unless there's no data to read). It (fgets()) has no clue whether it is being called from a while, an if or just inline. –Jonathan Leffler Feb 12 '13 at 1:51 1 I think you need to provide an SSCCE (Short, Self-C
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Getting error while using fgets in ansi c to open file up vote 2 down vote favorite I'm trying to create/open a file using c. I enter the name using the fgets command, so I can not overflow the buffer, like http://stackoverflow.com/questions/14824138/seg-fault-error-reading-from-file-with-fgets this: void main() { printf("Enter file name: "); char * fileName = (char *) calloc(MAX_BUFFER_SIZE, sizeof(char)); fgets(fileName, MAX_BUFFER_SIZE, stdin); FILE *inputFile = fopen(fileName, "w"); if(inputFile==NULL) perror(fileName); } Using the debugger, I can see that the value I entered for the name of the file, is the one I wish, but the fopen function returns NULL pointer and I get the "Invalid argument" error. If I use scanf("%s", fileName) instead there is no problem and the file is created but in this way I could http://stackoverflow.com/questions/10578981/getting-error-while-using-fgets-in-ansi-c-to-open-file overflow the buffer. Any ideas why the first example is not working? Thanks in advance :) c share|improve this question asked May 14 '12 at 7:18 azlisum 3271521 add a comment| 2 Answers 2 active oldest votes up vote 4 down vote accepted The string read by fgets might have a newline at the end. You'll have to remove it before you use the string in fopen. How to remove the newline at the end? share|improve this answer answered May 14 '12 at 7:19 codaddict 251k50362443 Yes this is it, thanks –azlisum May 14 '12 at 7:27 @azlisum Then accept the answer according to here. –Eitan T May 14 '12 at 7:31 2 Yeah, i was waiting 11 minutes... –azlisum May 14 '12 at 7:35 add a comment| up vote 2 down vote fgets() treats newlines differently than scanf("%s") or gets(). Unlike them, fgets() includes the newline in the string. After typing the filename, you pressed enter which probably included the newline into your filename, hence rendering it invalid. share|improve this answer answered May 14 '12 at 7:21 Imp 4,96211429 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Google Sign up using Facebook Sign up using Email and Password Post as a guest Name Email Post as a guest Name Email discard By posting your answer, you agree to the privacy policy and terms of service. Not the answer you're looking for? Browse other ques
is having difficulty reading the database (for example: "DBM: Error reading database file while checking for BOM"),confirm the following settings: Your Current DDF is assigned to the correct database http://meadowsps.hesk.com/knowledgebase.php?article=169 file. This database file is still in the same location that it http://www.w3schools.com/php/php_file_open.asp was in when last selected. Your system and user account has access and sufficient permissions to open and read this file. The database file is in a delimited text file format. The database file uses ASCII encoding or UTF-8 encoding. One easy way to confirm these settings error reading is to do the following: Open the "Database Definitions" dialog, Confirm the correct DDF is selected in the "Current DDF" popup menu on the top left corner of the dialog Click the "Select Database…" button that is on the bottom-left corner of the dialog.NOTE: You do NOT need to click "Quick Setup" to select the database and doing error reading db so may cause you to encounter a "Bad Tag!" warning when merging documents that are already using Links from this DDF. After you click "Select Database…", DesignMerge will prompt you to navigate to the database file, select it, and click "Open". When doing this, confirm you are selecting the appropriate database file and that it is in a delimited text file format. DesignMerge will then read the file and return you to the "Database Definitions" dialog. You should not see any warnings or errors. If you should encounter any errors or warnings, open a Support Ticket on the Meadows Help Desk (http://www.meadowsps.com/support). Article details Article ID: 169 Category: DesignMerge Date added: 2015-04-14 15:56:24 Views: 124 « Go back Copyright (c) 2013 by Meadows Information Systems, LLC d/b/a Meadows Publishing Solutions. All rights reserved worldwide. The Meadows Publishing Solutions product names mentioned on this website are registered trademarks or service marks of Meadows Publishing Solutions, Inc. and may be registered in certain jurisdictions. Other company and brand, product and service names are for identification
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