[c] Forum Topics

can anyone help me with this switch statement? i want it to go through line by line my file and, in the cases, increment x, y and z counts depending on the value of each digit in the strings. i debugged and its giving me some stupid value for xcount. …

Can someone please help me where to begin on this problem... I don't want answers, just some guidance: I have to make a program that reads a 4 digit integer: and encrypt it with a calculation: then swap 1st digit with 3rd, swap 2nd digit with 4th and print the …

[code] #include <stdio.h> #include "Boolean.h" #include "combinatorics.h" /* For all the functions below, return TRUE if the calculation is successful, FALSE if overflow occurs Return the calculated value in the pass by reference parameter provided */ Boolean calcFactorial (int n, int* nfact) { *nfact = 1; while(n > 0) { …

Hi ladies and gents, Next exercise is the following: Write the function which we can declare as follows: unsigned char bcd (int n); The idea of this function is to store the last two decimal numbers of n into a 'binary coded decimal' byte and to return this value. So, …

This is a question on one of my homework assignments and I have it narrowed down between these two but I'm not sure which one it is. Anyone know it? To avoid an infinite loop make sure the loop body: alters the exit condition or contains at least one output …

I'm working on TSR through C. i have writen dogens of them for dos, :rolleyes: but it works for dos only, can you tell me who to write TSR's for windows. Thankyou....

hi every 1 i am new and Ihope that you would help me I have to write a program that will allow you to enter if you enter the password without using strcmp function and here is my try [code] #include <iostream> #include <cstdio> using namespace std; bool password(); int …

does anyone know any easy way of reading in a file line by line. im assuming i need to use ifstream then just do while (!file.eof()) getline(file, string); i need to read each string into a switch statement and then extract 3 values: vertex.x vertex.y vertex.z for each string read …

Write the definition of a function dashedLine , with one parameter , an int . If the parameter is negative or zero, the function does nothing. Otherwise it prints a complete line terminated by a new line character to standard output consisting of dashes (hyphens) with the parameter 's value …

[CODE]/* For all the functions below, return TRUE if the calculation is successful, FALSE if overflow occurs Return the calculated value in the pass by reference parameter provided */ Boolean calcFactorial (int n, int* nfact) { unsigned long int count = 1; unsigned long int result = 1; while(count <= …

I have a function in one of my programs that picks a random state from a list. It then puts this random state in a structure array. However the name selected from the list does not match the name that winds up in my array structure. The following is not …

Hey all, First post here and hello to everyone. I've been studying C for a few months now, and everythnig has been making sense and I'm enjoying the challenge of learning to progeam. Ther is one thing that keeps eluding my understanding of arrays, and that's using a variable in …

A teacher of mine at NCC course said that a Array cell contains the memory address (pointer) of the next cell. is it true ?

I have a problem where I read in a 2D matrix and divide the matrix into 2 parts, where the sums of each part are equal. Each part must contain contiguous integers that can be networked together by following paths from one intger containing cell to another via shared sides. …

I have a template linked list class, eg: [CODE]LinkedList<int> list1; LinkedList<implicant> list_imp;[/CODE] Now I need a Linked List of Linked Lists, This is how I declared [CODE]LinkedList<LinkedList<implicant> > list_of_lists;[/CODE] Then I declared a Linked List of implicant class. [CODE]LinkedList<implicant> implicants_list;[/CODE] I calculated some value and put them in the implicants_list. …

I'm doing a "magic square" program and I'm having trouble with a button. It is supposed to stay active for as many clicks as it takes to fill the array storing the numbers, then become disabled. The button stops working the first time i click it though, and i dont …

Hi friends... I have a problem with some c codes and I think that you will be Capable to point it up for me. However, I do not want anybody to post the correct and complete code to me . I want to enter a string of numbers and the …

how i can change buttons control caption at runtime (with code)

Hi there, I have used the advice in this forum to solve most of the problems I have had so far but I am running out of time on this final assignment (due this evening) and I am stumped. I need to write a function that takes a time in …

I am working on a program for encryption & decryption using SDES Algo. This Algo. takes a key of 10-bit length and input plaintext of 8-bits length and produces a ciphertext of 8-bits length. I have collected the key in an array of char (char key[11]) and plaintext as unsigned …

After fixing some pointer problems with my structures, I decided to move the functions performed on them to another .cpp file. Here's the definition in my [B]main.cpp [/B] above the int main() of course [CODE][B]struct[/B] employee { [B]char[/B] name[[COLOR=Navy]20[/COLOR]]; [B]int[/B] schedule; [B]int[/B] level; }; [B]struct[/B] employee salesdept[[COLOR=Navy]10[/COLOR]];[/CODE] then in my …

I have a program that calls a function to generate an array of structures( data_set ). The structures consist of a char[20] and 2 int data types. Now what I'm trying to do is randomly pick from an enumerated data type and here is the code I have with a …

Thank you for reading the thread. I have been studying "How a floating point number is stored in 32 bits". I know a way to find the exponent numbers. But I don't know a way to find the mantissa values. Why the mantissa of 6.625 would be 010000011(

I am working on an exersize where I must display the elements of an initialized array of 10 double elements using a pointer variable and pointer arithmatic, I know how to display one element from the array but how do I display each element from the array?

Ok i've just started programming(<-- i bought a book)well just started learning, and already 2days in im faceing issues i cant deal with yet or dont understand (well i am on a mac). so i think it would be a smart move getting a mentor(a nice person willing to exchange …

Hey everyone, I'm trying to find some tutorials for peer-to-peer network programming ( LAN Parties ). I browsed through MSDN for any tutorials, but the only thing they have is stuff on DirectPlay. I would like to know how to connect to another/multiple computers. I've been reading up on Windows …

I posted this this morning on a newsgroup, but no one is answering questions there, I guess the newsgroup is dead. <my post> > I'm a newbie to the Window's platform and I need some > help. I have a program I'm working on that draws and > animates a …

If dealing with Windows and Serial Port communications isn't bad enough, I cant' even seem to come close when trying to implement a solution using completion routines and the WriteFileEx and ReadFileEx functions. Am simply trying to have both read and write fucntions as overlapped IO using these functions and …

Hi, I am making some software for microchips. I am currently developing some algorithms or the PC, and was wondering if there is a way to access a mouse button in very simple C, not c++, in the form of a variable, either on or off. Also, switch bounce is …

Hi ladies and gents, I'm trying the next exercise: Write a function value, wich adds the decimal numbers of 'n' together and return the result of this into main? For example: 0.1234 = 10 0.01234 = 10 0.3286 = 19 What Ive got so far is this: [CODE] short amount …

I have two programs that i have to write by next friday (april 1 ) but i have no idea how to do them. Can someone please help me out. These are the [B]conditions for the 1st one:[/B] 1) read floating point numbers into an array until teh sum of …

hi...i am really facing a problem in printing a "binary search tree which does an inorder traversal and searches for a node and insert a node"....so i have written a program for that but it doesn't print a binary search tree and is giving some strange grabage values i don't …

Can Anyone explain to me what defines a symmetrical matrix and what is i'm looking for that mkes a matrix symmetrical, any help on this subject would greatly be appreciated. it would help me understand, so i can write the boolean function to test if a matrix is symmetrical or …

how the hell do you do this?! please help asap! a. This problem is similar to the problem in your last assignment. However, this time you will need to keep track of all integers input by the user. b. Create a program that will read a series of ten (10) …

I have a problem that I am not sure how to even come up with a solution. So, I was wondering if anyone would have any input to the problem at hand. I have to divide a matrix that is defined by an input file into 2 distinct regions so …

:) Hello Everyone...IM RAZA..from Pakistan...new member here.. Well i hav a problemm....big problem now adays/// i have a project to make an operating system....can somebuddy help me?? i dont have any idea...guide me if u can.. RAZA. [url]http://www.razasnet.tk[/url] (under construction)

Hi I am getting this error with my code as I try to pass a 2d array into a function : mymain.cpp:173: error: cannot convert `float (*)[((dimensions - 1) + 1)]' to `float**' for argument `1' to `float objfunc(float**)'])' The code is as follows: [url]http://cpp.sourceforge.net/?show=4356[/url] The lines 0030, 173 and …

Hello! I want to creat an windows (nt) service? Could anyone tell me where i can find some documentation?

I've used "if and else" statements to test for conditions, but if's can get very "iffy" sometimes. Specially when you need to test for several possibilites. I was wondering if there is another way to do tests for conditions instead of using the IF. Just for better programming. example: tic-tac-toe …

I'd like to read a floating point value [b]cin >> Value [/b]where Value is declared as a double and then output it to a string justified to two decimal places. I understand how to do it using a temporary file, but I'd like to avoid that method and [b]sprintf() [/b]if …

I am trying towrite a C program which will print yearly calendars, given as input the year numbers. Input data will be taken from a text file, which will contain an unknown number of data lines, each containing a single integer giving a year, I first created a function to …

[COLOR=Black][FONT=Arial]Ps I need some help with my Windows programming assignment. My instructor wants us to draw an ellipse(2D) and make it appear like a ball(3D) by applying different shades of the same color to different parts of the ellipse. By assuming any point is the light source, parts near to …

I hope this makes sense... I made a program which requires authorization by username and password, once logged in it will allow you to load a program. My question is, is there a tutorial for the program being called to only open if it has been called by a certain …

I'm writing a blackjack program for class and I am having a problem with Aces, jack, queens, kings, my random number generator generates a 1, 11, 12, 13 for those cards, respectively... but Aces should be worth 11, jacks, queens, and kings, as 10, I have attatched my current code, …

Hello, i have done a script that is supposed to read urls from the SOURCE. When a user types in vg.no in stdin or read a file that contains vg.no it gets the last 5/6 topics from the newspaper. the problem here is that from pipe 0 to write pipe …

Hello I'm trying to print a Text file using Borland (example: Test.txt) without opening the file (I'm done with my program, and this is a feature I'love to have by pressing a "Print report" button) with no success. Any one done this before? Thanks

Hello, currently the only way i've found that I cn do a ".H" file in borland is to create a GUI one rather than a console bsaed *.exe file. When I do that it keeps generating errors.... There must be a way in Borland that I can split up class's …

what would really be fun would be .... how to print a circle of asterisks ... i've been trying for a while and have been getting all kinds of lopsided shapes .... .... even some shapes that I never knew existed ..... :lol: Could somebody out there please help moi …

I'm new to this whole Visual Basic idea, and my questions may be newb for all of you, but I'd like to learn. Here is my question. At school I was given an assignment , which is: Write a program which uses functions to accept as input from the key …

hi, wonder if anyone can help me. I have a text file with the following format: town_name followed by 12 real numbers i.e London 7.24 8.15 6.45 3.24 3.66 2.45 4.71 6.78 6.45 8.61 7.45 6.55 Manchester 12.23 10.67 7.56 4.34 5.55 6.29 8.77 14.77 9.77 7.49 8.34 7.66 Liverpool …