I got stuck with fgets () & rewind() function .. Please need help..
Actually I am doing a like,
The function should read lines from a txt file until the function is called..
If the data from the txt file ends then it goes to the top and then again when the function is called it should display me the top row .. I am doing like below , But it's not doing what I am expecting
Please need help..
abc1.txt
output
It should give me 12 rows as the function is called 12 times..
but it is returning me 9 rows..
How to solve it I am wondering from last couple of days ..
Last edited by user_prady; 02-07-2008 at 02:25 AM..
Hi all,
How can I quickly show Nth line from the huge file(at least more than 15GB)? I used the following script but seems slower.
See 2717298 th line.
head -2717298 data0802.dat | tail -1
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Discussion started by: primo102
8 Replies
LEARN ABOUT REDHAT
ungetc
GETS(3) Linux Programmer's Manual GETS(3)NAME
fgetc, fgets, getc, getchar, gets, ungetc - input of characters and strings
SYNOPSIS
#include <stdio.h>
int fgetc(FILE *stream);
char *fgets(char *s, int size, FILE *stream);
int getc(FILE *stream);
int getchar(void);
char *gets(char *s);
int ungetc(int c, FILE *stream);
DESCRIPTION
fgetc() reads the next character from stream and returns it as an unsigned char cast to an int, or EOF on end of file or error.
getc() is equivalent to fgetc() except that it may be implemented as a macro which evaluates stream more than once.
getchar() is equivalent to getc(stdin).
gets() reads a line from stdin into the buffer pointed to by s until either a terminating newline or EOF, which it replaces with '