|
|
Sponsored Content
Top Forums
Programming
Problem with function which reutrns pointer to a value
Post 87623 by jim mcnamara on Wednesday 26th of October 2005 11:06:32 AM
10-26-2005
|
|
10 More Discussions You Might Find Interesting
1. Programming
could any one tell why the following is showing segmentation fault while using **ptr
but working fine using **a
#include<stdio.h>
... (1 Reply)
Discussion started by: useless79
1 Replies
2. Programming
Hello all
im trying to build function that will return void function pointer
what is mean is ( not working )
the main function
void * myClass::getFunction(int type){
if(type==1)
return &myClass::Test1;
if(type==2)
return &myClass::Test2;
}
void myClass::Test1(){... (1 Reply)
Discussion started by: umen
1 Replies
3. Programming
If one wants to get a start address of a array or a string or a block of memory via a function, there are at least two methods to achieve it:
(1) one is to pass a pointer-to-pointer parameter, like:
int my_malloc(int size, char **pmem)
{
*pmem=(char *)malloc(size);
if(*pmem==NULL)... (11 Replies)
Discussion started by: aaronwong
11 Replies
4. Programming
Hi.
Problem: I have to parse the payload of a packet. The payload could be in Big Endian Format (network byte order) or little. That depends on a flag present in the header of the packet.
Solution: A horrible solution could be to check for that flag everytime I have to read a field in the... (11 Replies)
Discussion started by: emitrax
11 Replies
5. Programming
Hi guys.
how a functions such fdopen, ... can return pointer?
are these functions use static memory(variables)? (6 Replies)
Discussion started by: majid.merkava
6 Replies
6. Programming
if i create an array of pointers to a structure "struct node" as:
struct node *r;
and create "n" number of "linked lists" and assign it to the various struct pointers r using some function with a return type as structure pointer as:
r=multiplty(.......) /*some parameters*/
is... (2 Replies)
Discussion started by: mscoder
2 Replies
7. Programming
Hi,
In the below C code,
#include <stdio.h>
void print() {
printf("Hello\n");
}
int main() {
void (*f)() = (void (*)()) print;
f();
(*f)();
}
I wonder, how the syntaxes "f()" and "(*f)()" are treated as same without any error? Is this an improvement or ANSI/ISO... (1 Reply)
Discussion started by: royalibrahim
1 Replies
8. Programming
Does anyone know?
int x = 1;
int *p = &++x; //ok !
int *q = &x++; //gives an error :O
why the first pointer is ok but the second is an error? (13 Replies)
Discussion started by: nishrestha
13 Replies
9. Programming
Have difficulty to understand this pure C code to only print vowels twice from input string. Questions are commented at the end of each place.
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include <limits.h>
/*
*Demonstrate the use of dispatch tables
*/
/*Print a char... (11 Replies)
Discussion started by: yifangt
11 Replies
10. Programming
I am passing a char* to the function "reverse" and when I execute it with gdb I get:
Program received signal SIGSEGV, Segmentation fault.
0x000000000040083b in reverse (s=0x400b2b "hello") at pointersExample.c:72
72 *q = *p;
Attached is the source code.
I do not understand why... (9 Replies)
Discussion started by: jose_spain
9 Replies
LEARN ABOUT DEBIAN
imediff2
IMEDIFF2(1) IMEDIFF2(1) NAME
imediff2 - An interactive fullscreen 2-way merge tool SYNOPSIS
imediff2 [-m] [-u] [-a] [-b] [-c] [-N new-file] [-o outputfile] {file1} {file2} DESCRIPTION
Merge two (slightly different) files interactively with a user friendly fullscreen interface in text mode. Imediff2 shows the differences of given two files (in color if the terminal supports them), lets you scroll the file and toggle changes be- tween old and new version one by one. If the 'unresolved' mode is enabled, you can optionally save both versions. Additionally, if the $EDITOR environment variable is set or if /usr/bin/editor exists and is executable, you can also launch an external editor and manually edit the half-merged file before saving it, perhaps to resolve the 'unresolved' parts. Empty lines are shown in reverse colors so you see that you can select them. If a line is missing completely from one file, imediff2 dis- plays it as a reversed '?'. While it seems to take one line in the editing phase, it is naturally not saved into the output file. To see a list of keyboard commands, hit h or ? in the editor. The program exits with status 0 if the changes were saved, 1 if the merging was aborted and 2 if the parameters were invalid. OPTIONS
-o outputfile, --output=outputfile Write output to given file. If missing, changes will not be saved. -N, --new-file Treat absent files as empty. -m, --mono Force monochrome display. -u, --unresolved Enable 'unresolved' mode (see above). -a Start with version A (default). -b Start with version B. -c Start with unresolved changes (implies -u). -h, --help Show summary of options and exit. -V, --version Show version and exit. KEYBOARD COMMANDS
The following keyboard commands are available in the editor. h, ? Show commands. up, down, left, right Move in document. page up, page down Move a screenfull. enter Toggle selected change. n, tab, space Jump to next change. p Jump to previous change. a Set current chunk to version A. b Set current chunk to version B. u Set current chunk to unresolved. shift+a Set all changes to version A. shift+b Set all changes to version B. shift+u Set all changes to unresolved. e Launch external editor. r Discard editor-made changes. (Available only after e.) x, s Save and exit. q, ctrl+c Exit without saving. home, end Jump to start or end. SEE ALSO
sdiff (1), diff (1), merge (1), diff3 (1). COPYRIGHT
This manual page as well as the program itself was written by Jarno Elonen (<elonen@iki.fi>). Unlike the program itself, which is licensed under the GNU General Public License (GPL) version 2 (or any later version, at your option), this document has been placed into the Public Domain. AUTHOR
Jarno Elonen. 2006-03-10 IMEDIFF2(1)