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fclose issue in c , think its syntactical, but dunno 13 Years Ago by gruffy321 …( file_test != NULL) { printf("File has been created\n") ; fclose( *file_test) ; return 0; } else { printf("Unable to create file… Re: fclose issue in c , think its syntactical, but dunno 13 Years Ago by gruffy321 … { printf("File has been created\n") ; // print statement fclose( file_test) ; // close file creator down return 0; // return nothing } else… Re: fclose issue in c , think its syntactical, but dunno 13 Years Ago by gruffy321 … { printf("File has been created\n") ; // print statement fclose( file_pointer) ; // close file creator down return 0; // return nothing } else… Re: fclose does not write to disk 14 Years Ago by Ancient Dragon >>close(mfdprot); You probably meant fclose(mfdprot) Sounds like your operating system is buffering up the data. Try adding fflush() before fclose(). Re: fclose does not write to disk 14 Years Ago by heinzw [QUOTE=Ancient Dragon;1270084]>>close(mfdprot); You probably meant fclose(mfdprot) Sounds like your operating system is buffering up the data. Try adding fflush() before fclose().[/QUOTE] Thank you for your reply! I just found fflush and it works. Thanks again. Heinz weird sigabort from fclose 15 Years Ago by johndoe444 …(log_msg, "final tree"); if (fp != NULL) { fclose(fp); } [/CODE] Now I get some beautifully formatted output: [CODE….so.6(cfree+0x76)[0x7fd1979e8276] /lib/libc.so.6(fclose+0x151)[0x7fd1979d5d21] ./a.out[0x402ea9] ./a.out[0x4031ff]… [/CODE] If I comment line 18 ie the fclose then there is no problem. As can be seen… A project making use of FILE and file functions fopen,fgets and fclose 18 Years Ago by Bobbiegirl …: %s Action: fopen Error:\n", argv[2]); perror(ers); fclose(in); exit(2); } s = malloc(sizeof(struct stuinfo)); if(s…,l,s->dob,s->curr,s->gradyr); } fclose(out); fclose(in); free(s); } [/code] the full formatted print out… Re: ftell() fclose() and FILE* f = NULL 16 Years Ago by Salem > Terminates with: 'No source available for "fclose@@GLIBC_2.1() " ' You get these in debug builds… because the code for fclose uses assert() to validate the input parameters. If you were…'d know exactly where to start looking. In this case, fclose() is likely to begin with [ICODE]assert( fp != NULL… Re: weird sigabort from fclose 15 Years Ago by Dave Sinkula I doubt the problem is fclose. Of course it would be a good idea if fp is NULL not to continue. Do you have long input lines? Is the problem really elsewhere in the code you didn't post? Can you post enough of a trimmed but complete bit of code that demonstrates the problem (sample input file, too)? Segmentation Fault at fclose 17 Years Ago by programmer321 …No symbol table info available. #6 0x0038731a in fclose@@GLIBC_2.1 () from /lib/tls/libc.so.…) { //Closing preview file and creating new file fclose(fp); sprintf(l_tempbuf,"%c",g_logFile[strlen(g_logFilePath… ftell() fclose() and FILE* f = NULL 16 Years Ago by edek …);[/CODE] Terminates with: 'No source available for "fclose@@GLIBC_2.1() " ' [CODE=C]FILE* f = NULL; ftell(f);[/… fwrite and fclose Error 16 Years Ago by Pado ….cz/www/quizzes/XML/XML_doc_processing.php on line 69 Warning: fclose(): supplied argument is not a valid stream resource in /DISK3… the two lines that are returning errors fwrite($file_handle,$xmlPacket); fclose($file_handle); die(redirect_to('../../content_management.php?page_sel=content_management')); [/code] Thanks for… issues with fopen(), fread(),fclose() 16 Years Ago by shasha821110 … url:".$url."\n"; } $rawdata= fread($fd, 1000); fclose ($fd); }[/code] And i got the following error information: [code…: fread(): supplied argument is not a valid stream resource Warning: fclose(): supplied argument is not a valid stream resource [/code] I… Re: ftell() fclose() and FILE* f = NULL 16 Years Ago by edek [QUOTE=Salem;603653]Release builds have no assert() statements, so it would just return whatever the spec says fclose() should return if passed NULL.[/QUOTE] Actually, it terminates in release build. It should return error value, though. It might be some internal inconsistency of the implementation of C lib I am using (glibc2.1). Re: ftell() fclose() and FILE* f = NULL 16 Years Ago by edek … cancellation point and therefore not marked with __THROW. */ extern int fclose (FILE *__stream);[/CODE] What does [ICODE]'function is a possible… Segmentation fault on fclose 15 Years Ago by ibackus …++){ printf("%2i. % f\n",i+1,array[i]); } fclose(pFile); return 0; } [/CODE] And here is what I get… Re: fclose issue in c , think its syntactical, but dunno 13 Years Ago by Narue Don't dereference file_test. It's already a pointer to FILE. Re: fclose issue in c , think its syntactical, but dunno 13 Years Ago by Narue [B]>fopen("test.txt", "w", "a" )[/B] fopen doesn't take three arguments. Are you opening for reading, writing, or appending? Re: fclose issue in c , think its syntactical, but dunno 13 Years Ago by tiuwulf Take a look at that: [url]http://openbook.galileocomputing.de/c_von_a_bis_z/016_c_ein_ausgabe_funktionen_005.htm#mj2f57f419fdeadcd1c7dd4e001616d21a[/url] It's a really good ref for c-programming. G Tiu Re: fclose issue in c , think its syntactical, but dunno 13 Years Ago by gruffy321 thanks Narue and tiuwulf, and especially thanks for the link Tiuwulf (what does that name mean ?), anyway just to quickly return to you Narue, thank for the post regarding the "w", "r", "a" thing,... i got that to realised now it is in the form "w+a" or just "r+" as this can effectively read, write … fclose does not write to disk 14 Years Ago by heinzw Hi, I am using a FILE to write a protocol of the program execution which I will be using in case of crashes. Whenever I write a message to the file I open it [CODE] if ((mfdprot = fopen(protfile, "a")) == NULL) { [/CODE] after that I close it: [CODE] close(mfdprot); [/CODE] No matter what I tried the file is only written when the … Re: weird sigabort from fclose 15 Years Ago by Ancient Dragon When line 2 failes that function should return right away instead of processing the rest of that function. Re: weird sigabort from fclose 15 Years Ago by Salem > while ((fscanf(fp, " %[^\n]", line) != EOF)) I agree with Dave, this could so easily overflow your char array. Try using fgets instead. Re: weird sigabort from fclose 15 Years Ago by Adak Your fscanf() line of code doesn't have a format specifier: [code] while ((fscanf(fp, " %s[^\n]", line) != EOF)) [/code] Re: weird sigabort from fclose 15 Years Ago by Dave Sinkula [QUOTE=Adak;1147649]Your fscanf() line of code doesn't have a format specifier: [code] while ((fscanf(fp, " %s[^\n]", line) != EOF)) [/code][/QUOTE] It did before you incorrected it. [edit]Specifying a max width would have been a better attempt. Re: weird sigabort from fclose 15 Years Ago by Adak #1 post does not now, have a format specifier for fscanf(). You're saying that it used to have this? Re: weird sigabort from fclose 15 Years Ago by Salem [url]http://www.cppreference.com/wiki/c/io/scanf[/url] %[ is a valid thing. Re: weird sigabort from fclose 15 Years Ago by Adak Thanks, Salem. Re: A project making use of FILE and file functions fopen,fgets and fclose 18 Years Ago by Aia [quote]fprintf("Student Name SSN DOB CURR GRAD Yr");[/quote] [COLOR=DarkSlateGray]Did you forget where you want the be printed?.[/COLOR] fprintf([COLOR=Blue]out,[/COLOR]"Student Name SSN DOB CURR GRAD Yr"); Also [quote]fprintf(out,"%-30s\n %03d-%02d-4d\n %15s\n %8s\n %8d\n&… Re: A project making use of FILE and file functions fopen,fgets and fclose 18 Years Ago by Bobbiegirl Thank you I forgot the out in the statement and to put in the while loop. Now to tackle why the ssn is not printing the way it should. Can anyone help with that?: