Hello Friends,
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... (1 Reply)
Discussion started by: user_prady
1 Replies
3. Forum Support Area for Unregistered Users & Account Problems
I have an old file originally created in vi but read and saved by a word processor at some point.
I have ^Ms and know how to substitute them for anything I wish but I still only have one long line when viewed in vi.
So I suppose I need to substitute a newline for each ^M but I don't know the... (2 Replies)
Assume client send the message " Hello ", i get output such as
Sent mesg: hello
Bytes Sent to Client: 6
bytes_received = recv(clientSockD, data, MAX_DATA, 0);
if(bytes_received)
{
send(clientSockD, data, bytes_received, 0);
data = '\0';... (2 Replies)
Hi all,
I have this method to read a string from a STDIN:
void readLine(char* inputBuffer){
fgets (inputBuffer, MAX_LINE, stdin);
fflush(stdin);
/* remove '\n' char from string */
if(strlen(inputBuffer) != 0)
inputBuffer = '\0';
}
All work fine but if i... (1 Reply)
for i in `seq 1 10 ` ; do
printf $i '\n';
done
gives me this:
1234567891064mbarch ~ $ (output followed by bash prompt) :(
I've tried so many ways to create a newline at the end. Does anyone have any ideas.. Thanks in advance. Sorry (7 Replies)
I've been having trouble with reading past the end-of-file in C. Can anyone find my stupid mistake?
This is the minimal code needed to cause the error for me:
FILE *f = fopen(name, "r");
if (!f)
return;
pari_sp ltop = avma;
char line;
while(fgets(line, 1100, f) != NULL)
printf(".");... (23 Replies)
Hi,
I have a string like this,
char str ="This, a sample string.\\nThis is the second line, \\n \\n, we will have one blank line";
if I want to use strtok() to seperate the string, which token should I use?
I tried "\n", "\\n", either not working.
peter (1 Reply)
I am trying to make a download progress meter with bash and I need to echo a percentage without making a newline and without concatenating to the last output line.
The output should replace the last output line in the terminal.
This is something you see when wget or curl downloads files.... (6 Replies)
I have requirement to remove the /n ( newline ) characters from the file.
When I open file in VI .. I want to see newline char
how to display newline char .. or where can I see the content with newline char visible? (3 Replies)
Discussion started by: freakabhi
3 Replies
LEARN ABOUT ULTRIX
getopt
getopt(3) Library Functions Manual getopt(3)Name
getopt - get option letter from argument vector
Syntax
#include <stdio.h>
int getopt (argc, argv, optstring)
int argc;
char **argv;
char *optstring;
extern char *optarg;
extern int optind, opterr;
Description
The subroutine returns the next option letter in argv that matches a letter in optstring. The optstring is a string of recognized option
letters; if a letter is followed by a colon, the option is expected to have an argument that may or may not be separated from it by white
space. The optarg is set to point to the start of the option argument on return from
The function places in optind the argv index of the next argument to be processed. The external variable optind is automatically initial-
ized to 1 before the first call to
When all options have been processed (that is, up to the first non-option argument), returns EOF. The special option -- may be used to
delimit the end of the options; EOF will be returned, and -- will be skipped.
Diagnostics
The function prints an error message on stderr and returns a question mark (?) when it encounters an option letter that is not included in
optstring. Setting opterr to 0 disables this error message.
Examples
The following code fragment shows how one might process the arguments for a command that can take the mutually exclusive options a and b,
and the options f and o, both of which require arguments:
#include <stdio.h>
main (argc, argv)
int argc;
char **argv;
{
int c;
extern int optind, opterr;
extern char *optarg;
.
.
.
.
while ((c = getopt (argc, argv, "abf:o:")) != EOF)
switch (c) {
case 'a':
if (bflg)
errflg++;
else
aflg++;
break;
case 'b':
if (aflg)
errflg++;
else
bproc( );
break;
case 'f':
ifile = optarg;
break;
case 'o':
ofile = optarg;
bufsiza = 512;
break;
case '?':
errflg++;
}
if (errflg) {
fprintf (stderr, "usage: . . . ");
exit (2);
}
for ( ; optind < argc; optind++) {
if (access (argv[optind], 4)) {
.
.
.
}
See Alsogetopt(1)getopt(3)