Sponsored Content
Full Discussion: problem with while loop
Top Forums Programming problem with while loop Post 92433 by Perderabo on Sunday 11th of December 2005 10:44:07 AM
Old 12-11-2005
You did not just type an "a". You typed an "a" followed by a newline character. Try typing "unix" and watch what happens. This is one of several reason why I do not like scanf. What is worse here, you do not need scanf for anything. I would define a character array called inputline to be 80 characters. Then I would use fgets (never use gets) to read a line of input. Finally just "proceed=inputline[0]" to get the first character and discard the rest of the line.
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

for loop problem

Hi, I have a directory called logs in which i have the log files. i have to touch the file before deleting it. i am doing like this filestodelete="*.log* *log*" for files in $filestodelete do touch $files $files.$(date +%a) rm -f $filestodelete done touch is not working... (5 Replies)
Discussion started by: namishtiwari
5 Replies

2. UNIX for Advanced & Expert Users

loop problem

Hi guys my while do loop is not working properly; As soon as the load_date and run_date is same it should stop can somebody tell me where I am having the problem? In an oracle table I have LOAD_DT=5/1/2009 DATE datatype RUN_DT=5/5/2009 DATE datatype Now in a script with a spool file I get the... (15 Replies)
Discussion started by: henrysmith
15 Replies

3. Shell Programming and Scripting

Problem in While loop

Hi Guys, This is my code.. I am getting an error in the inside while statement when comparing.. I am not able to figure it out.. Pls help me... while read value fatherid son_id top_id r_type do inside_value=1; echo $inside_value; echo $r_type; while do echo... (6 Replies)
Discussion started by: mac4rfree
6 Replies

4. Shell Programming and Scripting

problem with a loop

Hi What is wrong with this loop it was taken has a example in book!!! it returns then /usr/sbin/svcadm disable ppserv else /usr/sbin/ppadmin stop fi } (3 Replies)
Discussion started by: Ex-Capsa
3 Replies

5. Shell Programming and Scripting

problem with while loop

hi I had created a while loop in a script file called whiletest.sh as follows as follows: count=0 max=10 while do echo $count echo count=$(count+1)" " done echo "value of count:$count" then i run the script with the command sh whilestest.sh but its giving me an error... (5 Replies)
Discussion started by: angel12345
5 Replies

6. UNIX for Dummies Questions & Answers

While loop problem

I have a while loop with -f and -o option.Can any one please tell me what that stands for?The Sample code is as follows:- while do ## some processing done (10 Replies)
Discussion started by: Param0073
10 Replies

7. Shell Programming and Scripting

Problem with While loop.

Hi Script Gurus, I am facing issue with while loop in bash. The while loop is running as end less loop even after given criteria does not meet. STATE_BEFORE_SPLIT () { for clone in $Clonegroups; do state=$( $Navicmd -listclone -name $clone -cloneid $Cloneid |awk... (3 Replies)
Discussion started by: RobP
3 Replies

8. Shell Programming and Scripting

Problem with loop within loop

Hi, I work on Ab-initio ETL tool which is based on Unix. I made a small script which has two loop's one with in another. All the functionality is working for the first line of outer loop but when it comes to other lines of outer loop it is throwing error as command not found. Below is the... (4 Replies)
Discussion started by: Ravindra Swan
4 Replies

9. Shell Programming and Scripting

Problem with While Do loop

I am trying to do a while do loop that asks for a password and returns if the password entered is incorrect. I have that part working however i want to modify it so that if a similar word is entered it will read "that is close but incorrect" and i cannot seem to get it working, being new in the... (6 Replies)
Discussion started by: lm5522
6 Replies

10. Shell Programming and Scripting

Problem with loop

Hi all, a problem with a loop. Imagine it starts with var1="$(cat txtif.out )"while do echo file1 echo file2 echo y > txtif.out if then break fi done exit 0 the problem is that if the file is changing during the loop seems to continue as it reads "x" state,... (5 Replies)
Discussion started by: Board27
5 Replies
gets(3C)						   Standard C Library Functions 						  gets(3C)

NAME
gets, fgets - get a string from a stream SYNOPSIS
#include <stdio.h> char *gets(char *s); char *fgets(char *s, int n, FILE *stream); DESCRIPTION
The gets() function reads bytes from the standard input stream (see intro(3)), stdin, into the array pointed to by s, until a newline char- acter is read or an end-of-file condition is encountered. The newline character is discarded and the string is terminated with a null byte. If the length of an input line exceeds the size of s, indeterminate behavior may result. For this reason, it is strongly recommended that gets() be avoided in favor of fgets(). The fgets() function reads bytes from the stream into the array pointed to by s, until n-1 bytes are read, or a newline character is read and transferred to s, or an end-of-file condition is encountered. The string is then terminated with a null byte. The fgets() and gets() functions may mark the st_atime field of the file associated with stream for update. The st_atime field will be marked for update by the first successful execution of fgetc(3C), fgets(), fread(3C), fscanf(3C), getc(3C), getchar(3C), gets(), or scanf(3C) using stream that returns data not supplied by a prior call to ungetc(3C) or ungetwc(3C). RETURN VALUES
If end-of-file is encountered and no bytes have been read, no bytes are transferred to s and a null pointer is returned. For standard-con- forming (see standards(5)) applications, if the end-of-file indicator for the stream is set, no bytes are transferred to s and a null pointer is returned whether or not the stream is at end-of-file. If a read error occurs, such as trying to use these functions on a file that has not been opened for reading, a null pointer is returned and the error indicator for the stream is set. If end-of-file is encoun- tered, the EOF indicator for the stream is set. Otherwise s is returned. ERRORS
Refer to fgetc(3C). ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+ SEE ALSO
lseek(2), read(2), ferror(3C), fgetc(3C), fgetwc(3C), fopen(3C), fread(3C), getchar(3C), scanf(3C), stdio(3C), ungetc(3C), ungetwc(3C), attributes(5), standards(5) SunOS 5.10 15 Oct 2003 gets(3C)
All times are GMT -4. The time now is 04:49 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy