fgetc error Lilburn Georgia

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fgetc error Lilburn, Georgia

share|improve this answer edited Jun 15 '12 at 20:39 answered Jun 15 '12 at 19:49 cacho 4,60931649 so what? A bullet shot into a door vs. This function is intended to be used in a fashion similar to the following example: int c = fgetc(fp); if (c == EOF && ferror(fp)) { int err = errno; fprintf(stderr, Hot Network Questions Is the NHS wrong about passwords?

The least the message will contain is the value of strerror(errnum), but usually it will do much better, and indicate the underlying cause in more detail. Hot Network Questions Can a Legendary monster ignore a diviner's Portent and choose to pass the save anyway? This function is intended to be used in a fashion similar to the following example: int c = fgetc(fp); if (c == EOF && ferror(fp)) { int err = errno; char How to decrypt a broken S/MIME message sent by Outlook?

Join them; it only takes a minute: Sign up What is the better way to check EOF and error of fgetc()? This function is intended to be used in a fashion similar to the following example: int c = fgetc(fp); if (c == EOF && ferror(fp)) { fprintf(stderr, "%s\n", explain_fgetc(fp)); exit(EXIT_FAILURE); } Its values are in the range of unsigned char and EOF, (some negative number). a bullet shot into a suspended block Pronuncia strana della "s" dopo una "r": un fenomeno romano o di tutta l'Italia?

This answer strikes me as a fundamental misunderstanding about how C handles stream conditions. What is the most expensive item I could buy with £50? Originally Posted by Bjarne Stroustrup (2000-10-14) I get maybe two dozen requests for help with some sort of programming or design problem every day. Isn't that more expensive than an elevated system?

asked 4 years ago viewed 4998 times active 4 years ago Linked 0 EOF missing for unix file 0 What will happen if fgetc reads 0xFF? 266 Why is “while ( Issue 6 Extensions beyond the ISOC standard are marked. go

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How many answers does this question have? This error may also be generated for implementation-defined reasons. [EOVERFLOW] [CX] The file is a regular file and an attempt was made to read at or beyond the offset maximum associated If a suitable message return buffer is supplied, this function is thread safe. Which day of the week is today?

Browse other questions tagged c fgetc or ask your own question. If the end-of-file indicator for the stream is set, or if the stream is at end-of-file, the end-of-file indicator for the stream shall be set and fgetc() shall return EOF. share|improve this answer answered Nov 27 '10 at 17:09 casablanca 50.6k476126 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Google Sign Forum Today's Posts C and C++ FAQ Forum Actions Mark Forums Read Quick Links View Forum Leaders What's New?

Doubtful these platforms will ever become common due to the amount of code, like the above, that relies on EOF being distinct from unsigned charconverted to int. Look up a C++ Reference and learn How To Ask Questions The Smart Way 08-28-2008 #3 Salem View Profile View Forum Posts and the hat of int overfl Join Date Aug Explanation is appreciable. This library is usually included automatically.

share|improve this answer edited Sep 18 '15 at 10:46 answered Sep 18 '15 at 10:17 undur_gongor 11.5k33359 @Ashiquzzaman: It is not a duplicate. –undur_gongor Sep 18 '15 at 10:28 This documentation is archived and is not being maintained. My best code is written with the delete key. 08-28-2008 #12 robwhit View Profile View Forum Posts Registered User Join Date Oct 2001 Posts 2,129 But it wouldn't have to work If type char is signed, and if EOF is defined (as is usual) as -1, the character with the decimal value 255 ('\377' or '\xff' in C) will be sign-extended and

Also, in your code, this: while (ch = fgetc(fp) != EOF) should be: while ((ch = fgetc(fp)) != EOF) The additional parentheses are required because != has higher precedence than =. fp The original fp, exactly as passed to the fgetc(3) system call. explain_message_errno_fgetc void explain_message_errno_fgetc(char *message, int message_size, int errnum, FILE *fp); The explain_message_errno_fgetc function may be used to obtain But to an answer of mine link, chux commented that if ( feof(fp) ) is more robust than int c; while ((c = fgetc(fp))!=EOF) As while(1) { c = fgetc(fp); if It also fails to check for an error condition. –FUZxxl Sep 18 '15 at 7:47 @user - No, the proper C++ way is while (cin >> c), and absolutely

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Why does argv include the program name? EOF could have been greater than zero if the maximum value of an int was greater than the maximum value of a char, and the standard didn't specifically disallow it, I Dev centers Windows Office Visual Studio Microsoft Azure More... Search Engine Optimisation provided by DragonByte SEO v2.0.32 (Pro) - vBulletin Mods & Addons Copyright © 2016 DragonByte Technologies Ltd.

APPLICATION USAGE If the integer value returned by fgetc() is stored into a variable of type char and then compared against the integer constant EOF, the comparison may never succeed, because UNIX is a registered Trademark of The Open Group. If you want a guaranteed signed char, you must use signed char. –Corbin Jun 15 '12 at 19:53 3 If you cast it to char then EOF takes the same assist.

Errors: EAGAIN The O_NONBLOCK flag is set for the file descriptor underlying fp, and the process would be delayed in the write operation. more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed prof. The content you requested has been removed.

char is an unsigned value. The 2nd code handles all situations including ones that may only apply to a computer sitting in a some long forgotten rubbish heap. Look up a C++ Reference and learn How To Ask Questions The Smart Way 08-28-2008 #8 robwhit View Profile View Forum Posts Registered User Join Date Oct 2001 Posts 2,129 Consider C/C++ Language and Standard Libraries C Run-Time Library Reference Alphabetical Function Reference Alphabetical Function Reference fgetc, fgetwc fgetc, fgetwc fgetc, fgetwc abort abs, labs, llabs, _abs64 access _access, _waccess _access_s, _waccess_s

Cover an unusual board with minimum chess rooks (KevinC's) Triangular DeciDigits Sequence What's the most recent specific historical element that is common between Star Trek and the real world? share|improve this answer answered Sep 18 '15 at 14:18 chux 45.3k63079 add a comment| up vote 1 down vote The suggested improvement is not better, even less robust. The least the message will contain is the value of strerror(errno), but usually it will do much better, and indicate the underlying cause in more detail. Examples: #include #include int main( void ) { FILE *fp; int c; fp = fopen( "file", "r" ); if( fp != NULL ) { while( (c = fgetc( fp

fp The original fp, exactly as passed to the fgetc(3) system call. If stream is NULL, fgetc and fgetwc invoke the invalid parameter handler, as described in Parameter Validation. Any conflict between the requirements described here and the ISOC standard is unintentional. QNX Software Development Platform > Utilities & Libraries > QNX Neutrino C Library Reference > F fgetc() Read a character from a stream Synopsis: #include int fgetc( FILE* fp );