C Programming.. Typecasting of structure pointers..
Hi,
I need to pass a typecasted structure pointer of one structure to another structure pointer..
The parameters of both structures are different say if first structure has int, char datatypes and second structure has float, double,char..
Please help.. I need to get the values of one structure and pass them to another structure..
Its pretty confusing me..
It sounds like you need a single structure containing a union rather than multiple structures. If you can show us details about what structures you have and what you're trying to get out of them, we might be able to help more.
Note that a union actually stores all elements in the same place, so its members t_float, t_string and type actually start at the same address. They all share their type variable in common. (Wherever the held-in-common variable is used, I highlight in red.) So you can pass different types of structures, and have the first value define which type it gets used as, without lots of different kinds of messy typecasts.
Hello, I read from a book exercise for a challenge. How to print out each letter of char array a by two different pointers pa and ppa in the example?
I have tried my code for letter "r" by testing without full understanding as only the first one worked.
#include<stdio.h>
int main()
{
char... (17 Replies)
echo $verbiage
"Nigeria","Can Nigeria succeed in their quest for a top 4 finish? Get daily Nigeria news, GOALS and LIVE Match updates for 30days at N200.Click Accept to SUBSCRIBE"
but when i run this command
sed 's/$/",$verbiage"/g' noverb.F5
I get below o/p
... (6 Replies)
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);
... (3 Replies)
I have a special character called ô. When it is declared as a character variable its showing it can be printed. But when it is declared as a character pointer variable its showing it cannot be printed. I am just wondering why its happening like this..
c1 = '@';
c2 = 'ô';
char *fp;
fp="XXô";
if... (1 Reply)
Hello Groups
I am trying to find out ways of comparing a value from a 'c' structure to a value in another 'C' structure. the 'C' structure can be a List or liked list as it contains lot many records.
if we loop it in both the structures it is going to consume time.
I am looking for a simple... (3 Replies)
Hi all. I am trying to use restricted pointers to allow the gcc compiler optimize the code, but I have not been able to make it work so far. I am testing with this code:
#include <stdlib.h>
#include <stdio.h>
#include <time.h>
#include <sys/time.h>
void vecmult(int n, int * restrict a, int... (0 Replies)
Hi I mash with pointers in C. I solve this problem about 5 hours and I don't know how I should continue.
void InsertFirst (tList *L, int val) {
tElemPtr new;
if((new = malloc(sizeof(tElemPtr))) == NULL) Error();
new->data = val;
new->ptr = L->frst;
L->frst = new;... (2 Replies)
Hi,
I am trying to write a script that will move all the files from source directory structure(multiple levels might exist) to destination directory structure. If a sub folder is source doesnot exist in destination then I have to skip and goto next level. I also need to delete the files in... (4 Replies)
Hi all
Is it possible to copy a structure of a directory only.
e.g.
I have a file with the following entries that is a result of a find :-
/dir1/dir2/file.dbf
/dir1/dir2/dir3/file1.dbf
/dir1/file.dbf
I want to copy these to a directory and keep the structure however starting at a new dir... (8 Replies)