[c] Forum Topics

[COLOR="Green"]Hi, I'm trying to write a linked list Program to accept a no. and print all the prime numbers less than it, using the sieve method, Explained below: Suppose that n=30.Then we list all the numbers till 30, and cross out 1 and all the multiples of 2, then 3,then …

Hi DaniWeb, [INDENT]So when you right click an .exe file (one you compile with C) you get the option to view the details such as File Description, File Version, Product Name, etc. I was wondering how to change these? I assume it'll be a C command, but I'm not entirely …

I erased this post because I made a mistake in it. Sorry

Write the function my_strchr(). The function has two parameters: a const char * s pointing to the first character in a C-style string, and a char c. Return a pointer to the first appearance of c appearing inside s and NULL (0) if c does not appear inside s. Is …

Hello guys, Can someone explain what is going on on this code? 1. why we needed **p in the function [B]AllocString[/B]? 2. why if I change [B]AllocString(strlen(s), &copy);[/B] to [B]AllocString(strlen(s)-7, &copy);[/B] I can still get a good result? Thanks! [code=c] #include <stdlib.h> int main() { char *s="example"; char *copy=NULL; AllocString(strlen(s), …

While reading Stroustrup's "The C++ programming language", I was puzzled at 'declaring a pointer to an array of character strings and declaring a reference to an array of 10 integers', and I had to clear my mind on pointers to arrays. I am posting here the notes I made to …

Hi, I am trying to figure out how to get my program to do one of two things: Either... 1. Create and remove a semaphore based on me entering a 'r' in the command line at argv[1] or 2. If argv[1] is a 'n', then I want check to see …

[[url]http://lxr.free-electrons.com/source/drivers/net/8139too.c#L498][/url][1] On above link What I am not getting is the structure [CODE] static const struct { const char *name; u32 version; /* from RTL8139C/RTL8139D docs */ u32 flags; } rtl_chip_info[] = { { "RTL-8139", HW_REVID(1, 0, 0, 0, 0, 0, 0), HasHltClk, },[/CODE] gets expanded to [CODE] static const …

In Ubuntu Is there any package which enables to view different 'C' command syntaxes. I am tired of 'man sprintf',man **** commands. Is there any GUI interface?

Hello; I would like to compress an 1D array of arbitrary number of elements. For instance if a user inputs IN : 111122233331 OUT: 14233411 [it shrinks/increases the array and replaces all the identical consecutive elements with a number of how many times theyve appeared.] This task must be accomplished …

hi everyone, i have a problem in converting the c++ language to c language. can anyone help me to do this because i just learn programming. #include <stdio.h> void choosePlay(char); void playGame(int,int,int,int); void match(int[][4]); int r1,r2,c1,c2; char comma; int cards[4][4]={{1,3,2,4},{4,2,3,1},{5,7,6,8},{8,6,7,5}}; void main() { char click; char newcard; cout<<"@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@\n"; cout<<"@ @\n"; …

Hi all, Quite a basic question for most of you; I am trying to obtain length of a string < char [b]name[MAX_ENTRIES][MAX_NAME_SIZE][/b] > for use in a for loop that will perform isalpha. [size=3][color=blue]for (int j=0; j < &name[i].length(); j++)[/color][/size] [color=black]I am getting [/color][color=red]error 2228: left of '.length' must have …

Hi I am new to C. I'm taking an operating systems class right now and I have a project that requires me to create a set of semaphores. The command line takes in: filename ropt NS value1 value2 value3...valueNS Where argv0 is the filename Argv1 is the option to remove …

Hello I hava a question regarding assembly. How could I take a number from register and find out how many hundreds, tens and ones it has. For example a number 412 has 4 hundreds 1 dozens i 2ones. Ive tried with looping a sub with a BRMI branch, but the …

I am writing a calendar in C. I'm still very new to the language. I think i wrote most of the functions/algorithms correctly (it would be nice if you guys could check for any errors too). Now I'm having a tough time printing the calendar out In a correct format. …

Hi folks, I'm quite new to C++ and I'm getting an exception I don't understand. I have a class named 'Rational' that performs calculations on fractions. It has a default constructor as follows... [CODE] //In Rational.h public: Rational(int num = 1, int denom = 2); //Default constructor void addition(Rational); void …

Write a function that accepts an array of integers and determines the product of each two integers. Although you can create a fixed size array in main, your function should work no matter what size of array is passed to the function. MY code: [CODE]#include <iostream> using namespace std; void …

I am not sure if this is more software problem or C problem. Nevertheless, I am trying to run simple test code to check if my lapack installation is OK. [CODE]#include <stdio.h> #include <atlas_enum.h> #include "clapack.h" double m[] = { 3, 1, 3, 1, 5, 9, 2, 6, 5 }; …

Hello, i needed suggestions regarding the book "Art of Computer Programming" by Donald E Knuth. im an undergraduate Computer Science student. i would like to know more about the book before i buy it. So, any reviews? Reviews as to how the Math in it is(i heard there are a …

Hi all. I would like to write a network server in C to run on debian linux. I have some network code thats working, BUT at the same time I want to read data from a serial port, and process it. I want to build a linux based server to …

I've got to write a program where it replaces a letter with a dash and then asks the user to enter the letter that should be their. I've written a program and It works the first time around and then prints out two lines. Where have I gone wrong ?? …

Hello Friends I want to pass a Double Dimension Array to a Function using Pointers... Right Now i am doing this.. [CODE] # include <stdio.h> void show(int *,int,int); int main() { int a[3][3]={1,2,3, 4,5,6, 7,8,9}; show(a[0],3,3); return(0); } void show(int *p,int row,int col) { int i,j; printf("\n\n\n"); for(i=0;i<row;i++) { for(j=0;j<col;j++) …

Hi, As part of porting a (mostly C++) library[1] to a "new" operating system[2], I'm trying to link the library's semaphore class to the platform's semaphore implementation. The problem is that the library assumes that the semaphore implementation will be a modern POSIX one[3] but the operating system's semaphores are …

Please give Free download links of Latest and Best C/C++ Compilers for Windows...

question about pointer and array. can we add a 2-D array (**A) with a 1-D array (*B)? both of the array is define as a pointer in the program. where array A is A[i][j] and B is B[i] new in C programming and pointer is difficult.... :-|

Please can you tell me where I've gone wrong !!! thanks Sam [CODE]#include<stdio.h> #include<stdlib.h> #include<ctype.h> #include<string.h> int main() { char array[80]; // input array int i=0; // loop counter 1 int vo=0; // vowels int co=0; // consonents int ot=0; // other characters printf("please enter string\n"); fflush(stdin); gets(array); while(i!=80) { …

Hi advance thanks... kindly let me know the detail command and communication with smart card... tell me the reference and suggestion....i have 94POS Machine.. i need to write and read the data from 94POS Machine with smart card...

Hello, I am trying to read two floats from a file written in its first line using the below code but after compiling I always get "wrong dimnesions" coulp please help me in that problem. Thanks in advance. [CODE]#include <stdio.h> #include <stdlib.h> #include <math.h> #include <ctype.h> int main() { float …

Please give me code demo by C or C++ : Speak file text ! HRESULT hr = S_OK; CComPtr <ISpVoice> cpVoice; CComPtr <ISpObjectToken> cpToken; CComPtr <IEnumSpObjectTokens> cpEnum; //Create a SAPI voice hr = cpVoice.CoCreateInstance( CLSID_SpVoice ); //Enumerate voice tokens with attribute "Name=Microsoft Sam” if(SUCCEEDED(hr)) { hr = SpEnumTokens(SPCAT_VOICES, L"Name=Microsoft Sam", …

Hello, Im looking at this weird little code fragment I stumbled upon the other day and I cant figure out how it works. OK, I get the picture how the array is filled up to the fourth index, but that descending part is evil. And weird. :) [CODE] #include<stdio.h> int …

Hi Every one in this great community ...i need help with Nokia BlockD game algorithm i really do not know how to start ,,,please could anyone here can get my feet on the stage ,just help me with some ideas to be able to get started: The rules of the …

Hello all, I turn once again to the wisdom of the internet: I have attached my two files to this post as to not use up a whole lot of space. The program is a mock "assembler" it takes mock assembly code and turns it into a file with hex …

Alright, so I've spent countless hours on this code and I need a fresh pair of eyes to give it a glance... This is my third assignment for my datastructures class, where I am to write code that turns a fully parenthesized expression (such as "((3+2)/(3-8))") into aan "arithemtic expression …

[CODE]#include <stdio.h> #include <windows.h> void main() { int i; for(i=0; i<21; i++) { if(i == 5) { system("cls"); printf("\n\n\n\n"); printf("\t\t ***************************************\n"); printf("\t\t ***************************************\n"); printf("\t\t *** ***\n"); printf("\t\t *** WELCOME TO ***\n"); printf("\t\t *** CLASS ATTENDANCE SYSTEM ***\n"); printf("\t\t *** ***\n"); printf("\t\t ***************************************\n"); printf("\t\t ***************************************\n"); printf("\n\n"); } if(i == 10) { …

I want to read a bmp file in c. i can read the header but now i need to see het photo. the attachments is am exemple. [CODE]#include <stdio.h> /* We moeten een apparte struct aanmaken voor de Magic Number, anders krijgen we een foutieve waarde hiervoor.*/ struct MagicNumber{ unsigned …

please help me.. here's another one.. 2 dimensional array program that computes the sum of data in columns and sum of data in rows. 3x3 array variable. please help me..

[COLOR="Green"]Hello everybody I am writing a mini program in Linux I have a message queue which has a default maximum capacity of bytes that can be written in it. I am trying to modify this capacity. I googled for a solution and tried to change the value of (msg_qbytes) by …

I am new to c prog. I have a project to do and i'm finding it difficult to do . it is a power transfer circuit with a programmable power supply,the power transfer circuit ,and the programmable load any help would be very appreciated!!!!:(

Hi, i'm a student and i needed help in storing all my information from C to a text file. Could anyone help me out. Thank you

I'm having an issue with my program when taking in a string. I have two variables (ones for testing), char xpr[50] and char tst[50]. xpr gets it string by fgets --- fgets(xpr,50, stdin); tst gets it value by strcpy --- strcpy(tst, "((1 + (2 * 3))*(2*3))"); when prompt, I put …

I need to create a structure related to an overtime pay calculator and define the variables needed within the structure to do those calculations. Then define and create a base class using the same variables that may serve the same function as the structure This is as far as I …

Hi everyone: I would appreciate some help with understanding how to free memory/use destructors. I have created a 2D dynamic array template class. I'm using Xcode and Xcode keeps crashing, with the message, "out of memory." Before I implemented this array class, I was using "new" directly within main() to …

I was trying to do some simple exercises on recursive functions: 1. Write a function using Recursion to print numbers from n to 0. My solution: [CODE]int integer(int n) { if(n>=0) { printf("\n%d",n); integer(--n); } }[/CODE] The next exercise was 2. Write a function using Recursion to print numbers from …

I have the following array below apart from it having more data and its all stored in a string array. how would I sort it so that It goes from highest to lowest. col 0 col 1 example 0 90.87 example 1 100.87 example 2 873.88 example 9 88.98 to …

Hello DaniWeb, [INDENT]I am making a command line program, which does not use a GUI. However, I am wondering if there is any code that I can use in order to change the program's icon (the one that appears on the top-left of the window, or in the Taskbar)?[/INDENT]

i have a problem regarding functions. this leap year code is frustrating because it will always give me "not a leap year" whenver i entered a year: [CODE]#include <iostream> using namespace std; int get_input(); bool CheckLeapYear(int); int main() { int year,x; char key; do { year=get_input(); cout<<CheckLeapYear(x)<<endl; cout<<"Press 'y' to …

Input rows and columns manually. Like this: input column: 3 input row: 2 then the output must be: 1 2 3 2 4 6 it's continuous. so if I enter new number in columns and row, it will display the numbers included. What is the code applicable for this. I …

The user is asked to input the number of days in a month and the first day of the month. Here is the sample output: Input the number of days in a month: 30 input the first day of the month: 4 0-Sunday 1-Monday 2-Tuesday 3-Wednesday 4-Thursday 5-Friday 6-Saturday Sun …

Hi all, I have used popen function to run a shell script in my c program.. using that shell script, i write some floating point vale to a temporary file.. Then i tried opening that file using fopen and i used fscanf to read the only floating point value that …

guys, ive copied a code about socket programming just to see how it runs. problem is i cant compile it everytime i compile client.c it shows and error. here is the error [CODE] client.c: In function ‘error’: client.c:9: warning: incompatible implicit declaration of built-in function ‘exit’ client.c: In function ‘main’: …