C / C++ Forum

Hello grp, I have a doubt. This is an example program I have written. May not be useful but just wanted to understand. short int hello(short int *i); main() { short int i=2; i = hello(&i);

Hi All, Having lots of dramas trying to pass an array of structures to a function. I manage to print to the elemnt of the first structure in the array and then I get a core dump. The code is very simple as I am just experimenting. Can anyone tell me what I am doing wrong. #include <stdio.h> #include <stdlib.h> #include <string.h>

I came across a construction in some code I was reading that I have never seen before and hope that someone could tell me how to interpret this: int (*literalScanners)(const ENCODING *, const char *, const char *, const char **); It looks like a function declaration to me but the ""

I'm writing a code of writing a value to a specific memory address. ================================================================= #include <stdio.h> int main() { long air; long *air_address;

I met a question in a test which invoked undefined behaviour and i was asked to answer the Expected answer of the question Specifications := Win98 Os Tc compiler int i=23; i=(i++|++i)^(i++ + ++i); what should be the value of i after this ? is there any way that i can predict the answer ? Also i don't have a good understanding of the...

Anyone here feel that "global variables" is misleading for variables whose scope is file scope? "global" seems to imply global visibility, while this isn't true for variables whose scope is file scope. If you have a variable whose scope is file scope in another translation unit, you have to provide a local declaration to access that variable...

How do you access an int pointer inside a struct. This is how it seems like it would work to me, but it doesn't... struct maze { int num; int * roomnum; }; void setmaze(struct maze * maze) { maze->num = 1; //this is equivelant to: (*maze).num = 1

Hi Folks , I am trying to solve the problem of reading the numbers correctly from a serial line into an intel pentium processor machine . I am reading 1 byte and 2byte data both positive and negative quantities . Can any one tell me what are the things i should bear in mind .

Hi all, I would like to know if someone have sites, howtos, papers ... any documentation about writing applications in C that comunicates with the PC thru the USB interface. Any documentation will be welcome and some examples as well, if possible. Cheers,

Hi all, I have a program, this works fine but if we declare static below "int i" it shows different storage class specifier. what will be the reason. #include <stdlib.h> static int i ; int i; int main()

hello all, i would like to know why this code compiles and gives the output Code 1: ---------- int main(){ printf("String" + 2); }

Hi, I know that C90 and C9x (N869) doesn't allow to define an array of size 0. int x; /* constraint violation */ I was under the impression that this was possible in C99, due to the common C90 practice: struct a

here is the code #include <stdio.h> int main() { char *str1="Borland International"; printf("%d\n", strlen(str1)); return 0; }

I would like to make an exe that parses the given info behind a exe to a txt anyone who can confirm this don't know why but the thing just freezes ?? 0 errors on compile ? // start source code <filename sparse.ccp> // writing on a text file #include <fstream.h>

Hi, I am working on an existing code base in which a lot of data displayed to the user is formatted in tables. Most tables are printed row-by-row using printf() with "%s" print conversion specification for each column (e.g. printf(%10s %25s %15s\n", pszCol1, pszCol2, pszCol3)). My problem is that when a string is longer the column's width,...

Hi, I am looking for an algorithm that figures out which numbers from a given set add up to another number. I am sure this has been done before, but I have no idea how such a calculation is called, which kind of limits my further searching. An example. The set contains the numbers 1-2-3-4-5. Now the algorithm should calculate all...

What's the best way to allow the compiler to inline a function in C? (Not C99, which already supports the 'inline' keyword.) The way I do it, is to define the functions in question as 'static' in a header file: static void foo() { /* ... */ }

Hi, I've got the following ... char user = "root"; unsigned long session = 0x0012453b; char result; How can I concatenate user and session to result? Thank you.

This is not homework. I'm trying to understand why this code doesn't output "$$$$$$$\0\n" -- all I get is "$)\n". (I admit I'm an idiot, OK?) #include <stdio.h> #include <stdlib.h> struct mystruct {

Hi, I am writing a C program trying to read highlighted text in aother application (Acrobat Reader or Microsoft Office). How do I find out which application is on focus and grab the text highlighted? Thanks. Danny

Hello all, I've been watching the group now for a bit, and I'm still not sure if this question is relelvent to this group, but here goes anyway: The following code: #include <stdio.h> #include <stdlib.h>

I can't get this nested loop to break the outer loop at the 5th data value so control can proceed to the next array col and continue pigeon-holing the next 5 in its own column. Why can I not get this nested loop to make sense? This is the last holdup to completion of my silly project. Explaining it from the inside - out, I want to fill a...

I have written a portable chess program using ANSI C, however at the moment my 'console' display is quite ugly. It currently uses rote printfs to output a page at a time of the board as well as other useful information. These pages simply scroll one after the other. However, in reality a better solution would be to (at minimum) clear the...

Hello all, The application I am working on must never output numbers in a floating-point format, that is, something like 2e-002 is a big no-no. At the same time, it must output numbers in a compact way, that is, it should only output significant digits, and only output a decimal point if there are digits following it.

Hi, Could you explain why the outputs of the 2 'for' are the same? Thanks #include <stdio.h> int main(void) { int i; for ( i = 0; i < 5; i++ ) {