Login or Register to Ask a Question and Join Our Community


Programming

EOF checking the below

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Programming EOF checking the below
# 8  
Old 03-10-2008
You need to do something like the following

Code:
read(fd, &mydata, (size_t)mydata )

# 9  
Old 03-10-2008
Quote:
Originally Posted by ramkrix
Thanks fmurphy for your reply.

if I have a structure defined at the beginning in another prgm instaed of an char array name[20],can I use like this?

struct bio {
char name[20];
int age;
float salary;
}

main()
{
struct bio mydata;
--------
--------
--------

read(fd, &mydata, (size_t) ))

}
How can we use the size_t with structure?

Thanks in Advance..

Ramkrix
fpmurphy's post clearly says that size_t is a typedef for an unsigned long. Declare a variable of that type as a structure member before using it in the read() call. The (size_t) is the C lang notation for a typecast used when converting from one type to another. Wrap code tags around your program listings.

Code:
struct bio
{
     char name[20];
     int age;
     float salary;
     size_t num_of_bytes_read;
}

main()
{
    read(fd, &mydata, num_of_bytes_read)
}

# 10  
Old 03-11-2008
Thanks fmurphy for your kind xplanation.

Regards,
Ramkrix
# 11  
Old 03-11-2008
Thank you Shamrock

Regards,
Ramkrix
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. SCO

Stop boot system at "Checking protected password and checking subsystem databases"

Hi, (i'm sorry for my english) I'm a problem on boot sco unix 5.0.5 open server. this stop at "Checking protected password and checking subsystem databases" (See this image ) I'm try this: 1) http://www.digipedia.pl/usenet/thread/50/37093/#post37094 2) SCO: SCO Unix - Server hangs... (9 Replies)
Discussion started by: buji
9 Replies

2. Shell Programming and Scripting

[Solved] <<EOF error checking

I am trying to check the return status of a command thats encapsulated in an <<EOF #!/bin/ksh set -x xxx() { set -x ls -lt /tmp/jdlkewjdlkewjdlkewjdlewjdlew<<EOT ret=$? EOT echo "ret=$ret" } >>$LOG 2>&1 LOG=/tmp/t2.out rm -rf $LOG echo "Starting process `date... (2 Replies)
Discussion started by: BeefStu
2 Replies

3. Shell Programming and Scripting

confused with << EOF EOF

Hi friends , I am confused with << EOF EOF Most of the cases I found sqlplus $db_conn_str << EOF some sql staments EOF another exapmle is #!/bin/sh echo -n 'what is the value? ' read value sed 's/XXX/'$value'/' <<EOF The value is XXX EOF (1 Reply)
Discussion started by: imipsita.rath
1 Replies

4. Shell Programming and Scripting

Until eof do????

Hey! Can I write a routine that allows me to in a txt file check line by line until the end of file? something like until do ---some code--- done maybe it is a stupid question but I never learned shell scripts and I need this :p thanks in advance (1 Reply)
Discussion started by: ruben.rodrigues
1 Replies

5. Programming

Eof

How can I write EOF into a file? I tryed to do as follows: size=sizeof(EOF); end_of_file=EOF; write(fdMutexRichieste, &end_of_file, size); But it does non work correctly, becouse in the next cicle (using lseek(..., SEEK_END) of my code it seems to ignore my EOF and use the LAST... (5 Replies)
Discussion started by: DNAx86
5 Replies

6. Shell Programming and Scripting

What is << EOF

I'm trying to connect to oracle with the following code in the script: checksqlerror{ if echo $1 exit fi } $SQLPLUS username/password@schemaname checksqlerror "failed to connect to oracle" If I'm passing wrong schema name,instead of executing checksqlerror it stops and expects user... (2 Replies)
Discussion started by: BhawanaAggarwal
2 Replies

7. UNIX for Dummies Questions & Answers

\n after EOF

Hello all, I have unix file that ends with the following EOF '9999999999' I want to remove the '\n' character after EOF. What is the command that should be included in the script, before sending the file? will this work: $ echo "<99999999999>\c" >> <filename> thanks in advance. (3 Replies)
Discussion started by: priya12
3 Replies

8. Shell Programming and Scripting

Eof

hi, in a shell script i came accross the following bit of code 1.shift $(($OPTIND - 1)) 2.if ; then 3. cat << EOF >&2 4.Usage: $0 lockfilename 5.EOF 6. exit 1 7.fi I am not able to understand the meaning of lines(1,3,5). Can any one of u tell me the purpose of above said lines.... (1 Reply)
Discussion started by: ravi raj kumar
1 Replies

9. UNIX for Dummies Questions & Answers

Eof

I have written this code: code echo 'Now choose the file or files you want to merge your input with: \c' read filenames filelist="" for file in $filenames; do filelist="$filelist $file" done echo "Now that you've chosen these files ($filelist), please start typing: " until ; do paste -... (2 Replies)
Discussion started by: fiol73
2 Replies

10. Shell Programming and Scripting

Please help with EOF

Hello, you are an awesome crowd! You answered my last questions, thank you sooo much! I am trying to write a korn shell script that will record the memory my application is using (HP-UX B.11.11) and I have this: if (( $APP > $THRESHOLD )) then echo "Warning message will display" cat... (2 Replies)
Discussion started by: satraver
2 Replies
Login or Register to Ask a Question