pass a pointer-to-pointer, or return a pointer? Post: 302274483

10 More Discussions You Might Find Interesting

1. Programming

pointer

void main() { int a={1,2,3,4,5,6,7,8,9,10}; int *p=a; int *q=&a; cout<<q-p+1<<endl; } The output is 10, how? if we give cout<<q it will print the address, value won't print.... if we give cout<<p it will print the address, value won't print.... p has the base addr; q...

2. Programming

Regarding char Pointer

Hi, char *s="yamaha"; cout<<s<<endl; int *p; int i=10; p=&i; cout<<p<<endl; 1) For the 1st "cout" we will get "yamaha" as output. That is we are getting "content of the address" for cout<<s. 2) But for integer "cout<<p" we are getting the "address only". Please clarify how we are...

3. Programming

pointer problem

could any one tell why the following is showing segmentation fault while using **ptr but working fine using **a #include<stdio.h> ...

4. Programming

far pointer

what is far pointer in C

5. Programming

How to return void function pointer

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(){...

6. Programming

matrix pointer

Can anyone tell me what the following statements do? float (*tab); tab=(float (*)) calloc(MAXCLASS, (MAXCLASS+1)*sizeof(float));

7. Programming

Pointer Arithmetic In C

I have a fundamental question on C pointer arithmetry.. Suppose i have a c string pointer already pointing to a valid location, Can I just do a charptr = charptr +1; to get to the next location, irregardless if my program is 32 or 64 bits? or should i do it this way: charptr =...

8. Programming

Pointer to pointers

Hi guys, I'm trying to understand pointers in C and made a simple example and I've problems with It. Can someone help? #include <stdio.h> #include <stdlib.h> #include <assert.h> int f1(char **str_); int main(int argc, char **argv) { char *str = NULL; f1(&str); ...

9. Programming

Pointer for 2D array seems to be 3D in C

I am struggling with the pointer to 2D-array (cf: 2D array of pointers). Can anybody help me elaborate how the pointer x moves in the memory to access the individual of y, especially the high lighted lines? I have talked to one of the curators of the forum, but I am still not quite clear. Here...

10. Programming

Segmentation fault when I pass a char pointer to a function in C.

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...

LEARN ABOUT CENTOS

phones

phones(4)							   File Formats 							 phones(4)

NAME

       phones - remote host phone number database

SYNOPSIS

       /etc/phones

DESCRIPTION

       The  file /etc/phones contains the system-wide private phone numbers for the tip(1) program. /etc/phones is normally unreadable, and so may
       contain privileged information.	The format of /etc/phones is a series of lines of the form:

       <system-name>[ 	]*<phone-number>.

       The system name is one of those defined in the remote(4) file and the phone number is constructed from [0123456789-=*%]. The  `='  and  `*'
       characters  are	indicators  to	the auto call units to pause and wait for a second dial tone (when going through an exchange).	The `=' is
       required by the DF02-AC and the `*' is required by the BIZCOMP 1030.

       Comment lines are lines containing a `#' sign in the first column of the line.

       Only one phone number per line is permitted. However, if more than one line in the file contains the same system name tip(1)  will  attempt
       to dial each one in turn, until it establishes a connection.

FILES

       /etc/phones

SEE ALSO

       tip(1), remote(4)

SunOS 5.10							    14 Jan 1992 							 phones(4)