C Programming Quiz
This quiz consists of 20 multiple-choice questions. Please use the answer sheet at the end to enter the appropriate answer for each question (T, F, A, B, C etc).
...
I am having trouble reading items into a multidimensional array. I have a file that is always in this format below:
3
1.2 2.4
3.5 1.2
0.4 5.6
The top line indicates how many items the...
Hi
Im totally new to image processing. I was hoping if somebody could tell me how to calculate the histogram (HSV nad RGB) of an image in C without using the built in library function of O...
How to verify user input is number in C?
Hi there,
I have a problem trying to generate the pyramid below using nested loops:
----------1
---------232
--------34543
-------4567654
------567898765
-----67890109876
----789012...
I'm tweaking a program that requires that I raise an integer to the power of a fraction: 3 ^ 1.4, etc.
The problem is that I cannot use the standard math.h pow() function as I'm having too ...
I am trying to load a PNG file at runtime into a dialog. I read that VS 2008 is able to do this, but must be done programmatically. I have the file in the resource editor, IDB_IMAGE and the ...
I am trying to use libcurl to access remote web pages via a bank of anonymous web proxies. I can go to a particular web proxy URL (for example http://www.antifilters.info/) and retrieve their...
Hello There,
I would like to validate the user input as numerical only. Range between 1 and 1000 inclusif. I need to use a loop to validate this input.
As long as the user has entered a...
1. The while looping structure can be used in a C program __________.
A) when the number of repetitions is known in advance.
B) as a pre-test counting controlled loop.
C) as a pre-test c...
I'm trying to start programming in C, and I have some sample source code that I know should be good. It is in the code section below.
When I try to compile it using MinGW, using the command...
Hi ,
i have written an Video application which uses WebCam.
Works fine!!!
but i wonder how to check the availability of the WEBCAM. i.e status if present or Not present or Busy???
us...
Hello,
I am supposed to read data from file to buffer then transmit this data.
I use the following:
char buf[1024];
fd = open("file1.txt", O_RDWR | O_NONBLOCK);
read...
Hi
I have a char array
char m_string [20];
that contains a set of 9 digits 012345678
Is there any way I can add a hyphen into the string to get 012345-678 ?
The hyphen will always be ...
For some reason my program keep crashing when it is time to free memory that was allocated by strdup. Can somebody determine what I am doing wrong?
Hi,
Have been trying to get to grips with both C and BerkeleyDB recently, being a newbie to both.
Wrote my first callback today (below), but during compiling I get the following
erro...
I try to read data from a text file into a two-dimensional array in c++.
There are 8 tab seperated column and 5000 rows of integers (shorts).
When I run the code below the b counter is m...
int CmdProcessUPLOAD(char *filename, int len, Client *pclient, int cmdKeyLen)
{
//read until talk over
char recvline[256];
int n = 0;
while(1)
{
//n=recvfrom...
I need help with my C prpgramming. I need to read ch by ch from a text file and store each word into a global array. The file will only contain white space or endline.
Thanks
The text fi...
when I call gethostbyname using argv[1], I have no problem but when
I pass as a pointer and call gethostname I have assignment makes pointer
from integer without a cast.
Hi,
I'd like to know how to pass a string to a function by reference.
e.g.
main()
{
char * string;
myfunction(string);
}
myfunction(string)
{
//modify string and send back to...
Hi,
Could anyone pls tell me what this means..It seems like the size of the array has not properly allocated? thanks a million
Address 0x1B91D1C0 is 0 bytes after a block of size 8 allo...
Hello all,
I am trying to debug a dll i have received to maintain. This dll is loaded as a hook and reads socket info with iexplore.exe. However i get a memory read error which is intermitt...
Typical programme question is like this
..............a program which prompts the user to enter an integer (in the range 1-8)determ...
Hi all,
I want to work My application in Non-english Os.
As of now , my application follow ISO-8859-1 encoding.For I18N, i m going to change UTF-8.
My dought is , part of my applicati...
