Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: C++: No output for Char* when on AIX. Worked on Linux
Top Forums Programming C++: No output for Char* when on AIX. Worked on Linux Post 302477806 by Corona688 on Monday 6th of December 2010 11:26:28 AM
Old 12-06-2010
Yes. You're overwriting not just your input but all kinds of data beyond it you shouldn't be, corrupting main()'s argument array.

If you really, really need to return a char * (why can't you pass a buffer into a standalone? everything else does, that's how it's supposed to work) you can return a pointer to a static local variable.

Code:
char *function(const char *wtf)
{
        char buf[512];
        strcpy(buf, wtf);
        return(buf);
}

...but this is discouraged because it will always return the same buffer.

Code:
char *a=function("abc");
char *b=function("def");

// both A and B now point to "def"

 

9 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Variables being worked on inside of loops

I have a while read loop that reads values inside of a file and then performs an expr operation on each. Everything works fine, the way it's supposed to but, once the loop is finished, I can not access the variable that I used inside of the loop (but that variable was created outside of the... (7 Replies)
Discussion started by: yongho
7 Replies

2. Shell Programming and Scripting

test to see if useradd worked

I am trying to write a script that does a useradd -G <group> <user> but you cannot modify the user if he/she is logged on. How could I check to see if the user is on or if the user has been added to the group successfully? I plan on having the script sleep for a couple mins if the user is on then... (3 Replies)
Discussion started by: doublejz
3 Replies

3. Shell Programming and Scripting

vi command -output garbage char in HP-UX

Hi all , I am new to HP-UX flavour of unix. i am issuing simple "vi" comand on the command prompt it is showing me some garbage character in command prompt itself ..unreadable format. I tried opening an existing file using the vi editor --and same thing ... (3 Replies)
Discussion started by: jambesh
3 Replies

4. Shell Programming and Scripting

Different output in AIX and Linux OS

Hi All , Please help me in understanding why i am getting error for the below script in LINUX, but the same script will work perfectly in AIX unix. Script Name:try.ksh #!/bin/ksh echo "$0 \n" MYPWD=$(pwd $(dirname $0)) echo " $MYPWD \n" O/P in LINUX OS: ./try.ksh ./try.ksh:... (2 Replies)
Discussion started by: sudhir_barker
2 Replies

5. Solaris

Anyone worked with ldmp2v?

Hi, has anyone worked with ldmp2v utility to convert a physical machine to a virtual. I am been trying to convert an ultra 45 (test machine) to an ldom on a T6320 blade server (with ldom manager 1.3) but have been unsuccessful. The firmware of the blade has been upgrade to the latest available.... (0 Replies)
Discussion started by: Mack1982
0 Replies

6. Programming

error: invalid conversion from ‘const char*’ to ‘char*’

Compiling xpp (The X Printing Panel) on SL6 (RHEL6 essentially): xpp.cxx: In constructor ‘printFiles::printFiles(int, char**, int&)’: xpp.cxx:200: error: invalid conversion from ‘const char*’ to ‘char*’ The same error with all c++ constructors - gcc 4.4.4. If anyone can throw any light on... (8 Replies)
Discussion started by: GSO
8 Replies

7. UNIX for Dummies Questions & Answers

Code not worked,as expected

Hi All, OS :- HPUX.. I have a following code, which I wrote to meet date and time condition. The below code refuse to work for some reason, I still don't have any idea, why ? the below code, should exit out, if the day happens to be sat and time greater the 04:00 pm. I am bit surprised, that... (2 Replies)
Discussion started by: alok.behria
2 Replies

8. UNIX for Beginners Questions & Answers

Sleep command did not worked

Hi All, We have a process which is running for last 2 years well and good in production. But suddenly yesterday there was issue we faced in the process. The actual process is what it does like below. 1. Receive the files in NAS directory(N/w attached storage). 2. Trigger the... (11 Replies)
Discussion started by: mad man
11 Replies

9. UNIX for Beginners Questions & Answers

Calculating Total Hours worked

Write a script using a Linux shell programming language to perform clock management for a small daycare. The program should manage all time in and out routines. At the end of the each day should give the Total hours worked that day. Example: Time-In 6:30am Lunch-Out 11 :25am... (1 Reply)
Discussion started by: sarapham409
1 Replies

LEARN ABOUT ULTRIX

ppmtosixel

ppmtosixel(1)						      General Commands Manual						     ppmtosixel(1)

NAME

       ppmtosixel - convert a portable pixmap into DEC sixel format

SYNOPSIS

       ppmtosixel [-raw] [-margin] [ppmfile]

DESCRIPTION

       Reads  a  portable  pixmap  as input.  Produces sixel commands (SIX) as output.	The output is formatted for color printing, e.g. for a DEC
       LJ250 color inkjet printer.

       If RGB values from the PPM file do not have maxval=100, the RGB values are rescaled.  A printer control header and a color assignment table
       begin the SIX file.  Image data is written in a compressed format by default.  A printer control footer ends the image file.

OPTIONS

       -raw   If  specified,  each  pixel  will  be explicitly described in the image file.  If -raw is not specified, output will default to com-
	      pressed format in which identical adjacent pixels are replaced by "repeat pixel" commands.  A raw file is often an order	of  magni-
	      tude larger than a compressed file and prints much slower.

       -margin
	      If  -margin  is not specified, the image will be start at the left margin (of the window, paper, or whatever).  If -margin is speci-
	      fied, a 1.5 inch left margin will offset the image.

PRINTING

       Generally, sixel files must reach the printer unfiltered.  Use the lpr -x option or cat filename > /dev/tty0?.

BUGS

       Upon rescaling, truncation of the least significant bits of RGB values may result in poor color conversion.  If the original PPM maxval was
       greater	than  100,  rescaling  also reduces the image depth.  While the actual RGB values from the ppm file are more or less retained, the
       color palette of the LJ250 may not match the colors on your screen.  This seems to be a printer limitation.

SEE ALSO

       ppm(5)

AUTHOR

       Copyright (C) 1991 by Rick Vinci.

								   26 April 1991						     ppmtosixel(1)
All times are GMT -4. The time now is 01:03 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy