Headers like?? -----Original Message----- From: Michael Schwendt [mailto:ms0301rh@xxxxxxxx] Sent: Thursday, April 10, 2003 1:30 PM To: redhat-devel-list@xxxxxxxxxx -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Thu, 10 Apr 2003 12:01:24 +0530, Ajay Bansal wrote: > Following program is not working on linux. Ideally it should read all > the lines from "/tmp/log.txt" and print them on to the screen. The given source code example does not match this description. Apart from that it would not even compile, because you forgot to include a few headers. > Instead > it breals after it encounters fgets for the first time. > Pleas tell me where I am going wrong!!!! This program is working as > expected on a Solaris machine. I doubt that. See below. > Entries in log.txt > ------------------ > Line1 > Line2 > Line3 > ------------------ > > Output of the program > --------------------- > [ajay@xxxxxx test]$ ./a.out > Fileno is :3 > Error no is : 0 > Error is : Success > Line read is : > after fgets break outside while loop > --------------------- > > #include <iostream> > #include <fstream> > #include <errno.h> > #include <stdlib.h> > using namespace std; > int main() > { > char * pszFileName = "/tmp/log.txt"; > char * pszMode = "a+"; !!! > char lpsz[4096]; > FILE *pFile = fopen(pszFileName, pszMode); Due to pszMode above, this opens the file at the end. Therefore it doesn't read the contents of the file. > while (!feof(pFile)) { > if (! fgets(lpsz, 4096, pFile)) > { > cout<<"Error no is : "<<errno<<endl; > cout<<"Error is : "<<strerror(errno)<<endl; > cout<<"Line read is : "<<lpsz<<endl; > break; > } > cout<<"Line read is : "<<lpsz<<endl; > cout <<" after fgets break inside while loop"<<endl; > } > > cout <<" after fgets break outside while loop"<<endl; > > return 1; > } - -- -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.7 (GNU/Linux) iD8DBQE+lSRk0iMVcrivHFQRAllEAJ0U2eg6IHkzYbQhxgn0OFrx33Qi1gCeMqfu jFzgzvVBpOq2oi2J+nRIdkY= =IfMm -----END PGP SIGNATURE----- _______________________________________________ Redhat-devel-list mailing list Redhat-devel-list@xxxxxxxxxx https://listman.redhat.com/mailman/listinfo/redhat-devel-list _______________________________________________ Redhat-devel-list mailing list Redhat-devel-list@xxxxxxxxxx https://listman.redhat.com/mailman/listinfo/redhat-devel-list
