10 More Discussions You Might Find Interesting
1. 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
2. Programming
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)
Discussion started by: pharaoh
3 Replies
3. Programming
Can anyone tell me what the following statements do?
float (*tab);
tab=(float (*)) calloc(MAXCLASS,
(MAXCLASS+1)*sizeof(float)); (3 Replies)
Discussion started by: littleboyblu
3 Replies
4. 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
5. Programming
what is far pointer in C (1 Reply)
Discussion started by: useless79
1 Replies
6. Programming
Hi i'm new to c programming and i'm trying to change the address of a pointer/variable but i can't seem to get it right,
I have this
char heap;
char *firstFree = heap;
char *allocMem( int size ) {
void *malloc(size_t sizeofint);
/*allocate space for an array with size... (19 Replies)
Discussion started by: Poison Ivy
19 Replies
7. Programming
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... (2 Replies)
Discussion started by: sweta
2 Replies
8. Programming
what is the difference between a file pointer and a file descriptor. (1 Reply)
Discussion started by: bankpro
1 Replies
9. Programming
hi all:
bankpro again,
i want to open a file and close it after an hour (i.e open and close the file ptr)
In the mean time i will be executing my jobs using the shell (CommandInterpreter).
plz help... :cool: (3 Replies)
Discussion started by: bankpro
3 Replies
10. Programming
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... (1 Reply)
Discussion started by: sarwan
1 Replies
