Error Using Feof
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While( Feof(fp))
Exchange Cody Blogs Newsreader Link Exchange ThingSpeak Anniversary Home Ask Answer Browse More while feof php Contributors Recent Activity Flagged Content Flagged as Spam Help MATLAB Central Community Home MATLAB Answers File Exchange Cody Blogs Newsreader Link Exchange how to use feof in c ThingSpeak Anniversary Home Ask Answer Browse More Contributors Recent Activity Flagged Content Flagged as Spam Help Trial software Sirisha Arli (view profile) 1 question 0 answers 0 accepted answers Reputation: 0 Vote0 Error using feof, Invalid file identifier. Use fopen to generate a
Feof Stdin
valid file identifier. Asked by Sirisha Arli Sirisha Arli (view profile) 1 question 0 answers 0 accepted answers Reputation: 0 on 25 Mar 2016 Latest activity Answered by Walter Roberson Walter Roberson (view profile) 27 questions 27,551 answers 9,623 accepted answers Reputation: 49,793 on 25 Mar 2016 32 views (last 30 days) 32 views (last 30 days) fin = fopen('mcs_ansys_standard.txt','rt'); fout = fopen('mcs_ansys.txt','wt'); while ~feof(fin); str = fgetl(fin); if strncmp(str,'F,P51X,FY,-',length('F,P51X,FY,-')); str =strcat('F,P51X,FY,-',num2str(P)); elseif strncmp(str,'MPDATA,EX,1,,',length('MPDATA,EX,1,,')); str =strcat('MPDATA,EX,1,,',num2str(E)); elseif strncmp(str,'SFBEAM,P51X,1,PRES,',length('SFBEAM,P51X,1,PRES,')); str =strcat('SFBEAM,P51X,1,PRES,',num2str(W)); end fprintf(fout, '%s\r\n', str); end fclose(fin); fclose(fout); !"C:\Program Files\ANSYS Inc\v150\ANSYS\bin\winx64\ansys150.exe" -p ansys -dir "C:\Users\Sirisha\Documents\MATLAB\ranjith" -j "MCS_FEA" -dvt -s read -l en-us -b -i "C:\Users\Sirisha\Documents\MATLAB\ranjith\mcs_ansys.txt" -o "C:\Users\Sirisha\Documents\MATLAB\ranjith\deflecion_out.txt" fid = fopen('del_max.out','rt'); flag_string = 'NODE UY'; while ~feof(fid); s = fgets(fid); flag = strfind(s,flag_string); if flag s1 = fgets(fid); s2 =
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 feof c++ About Us Learn more about Stack Overflow the company Business Learn more about difference between eof and feof in c hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss
Ferror In C
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 Why is “while https://www.mathworks.com/matlabcentral/answers/275360-error-using-feof-invalid-file-identifier-use-fopen-to-generate-a-valid-file-identifier ( !feof (file) )” always wrong? up vote 266 down vote favorite 135 I've seen people trying to read files like this in a lot of posts lately. #include
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies http://stackoverflow.com/questions/4299296/how-to-use-feoffile-f of this site About Us Learn more about Stack Overflow the company http://php.net/manual/en/function.feof.php 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 in c minute: Sign up How to use feof(FILE *f)? up vote 2 down vote favorite 1 I'm having a hard time with a do-while loop, that is supposed to stop when we reach the end of the file. Here's the loop code: do { if (pcompanyRow[0] != '#' && pass == 1) { strtok(pcompanyRow, ":"); pcompanyName = strcpy(pcompanyName, strtok(NULL, "")); pass = 2; feof in c fgets(pcompanyRow, 1024, f); } if (pcompanyRow[0] != '#' && pass == 2) { strtok(pcompanyRow, ":"); pcompanySMSPrice = strcpy(pcompanySMSPrice, strtok(NULL , "")); pass = 3; fgets(pcompanyRow, 1024 , f); } if (pcompanyRow[0] != '#' && pass == 3) { strtok(pcompanyRow, ":"); pcompanyMMSPrice = strcpy(pcompanyMMSPrice, strtok(NULL, "")); pass = 4; fgets(pcompanyRow, 1024, f); } if (pass == 4) { AppendCompanyNode(pcompanyList, pcompanyName, pcompanySMSPrice, pcompanyMMSPrice); pass = 1; } } while (!feof(f)); After running with the debugger, I noticed that all the crash problems I have are because it doesn't go out of this loop even when it reached the whole lines. How should I write it correctly? c loops while-loop eof feof share|improve this question edited Nov 28 '10 at 22:42 Jonathan Leffler 439k62511823 asked Nov 28 '10 at 21:50 k-man 37821020 1 As the answers say, the succinct answer is "You don't use feof()". The only time you use 'feof()' is when you get an error-or-eof indication from a primary input function (fgets() for example) and you decide that you want to distinguish between EOF and an error. Most often, most people do not
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