19,876 Topics
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 | Hey everyone, we're still working trying to get Linux to communicate to our robot via an RS232 port. We added this code to the project in Mono: [code=c#]Using System.Ports.IO SerialPort ports = new SerialPort("ttyS0",19200,Parity.None, 8, StopBits.One); [/code] We can't get anything sent out of our COM ports. We're not even … |
| | Hi,dear all... Im new to C and to this discussion forum. i hv a problem here,which is an array passing problem. int calAge(]) doesnt work well. i tried to look from the internet for reference but get nothing. can u all help me to check it out?coz im not familiar … |
| | Hi all, Just started learning C.I have some basic queries.They may sound silly to you.But please bear with me. -What is the difference between Linking,Runtime and Compilation Error? -What does getchar() actually do? -How do turbo C++ and Visual C++ compilers differ from each other?I mean...in what aspects?Do C functions …  |
| | just having a bit of an issue on a simple problem, m meant to read in a string and return the characters using the fgets method, this is what i have come up with, i get wierd outputs, ex commas, etc, cn sum1 help me plz [CODE] #include <stdio.h> #include …  |
 | I'm getting an unexpected error for my piece of code. It seems like a new line character is added into the string once is it called. Well the purpose of my lil code is to read characters from the keyboard using the fgets function and then convert it into pig … |
| | This project is mainly GCD and validating the error from user input. I got the GCD working correctly, but not the errors. Here's guidelines to validate the errors. [QUOTE]-Provide a function to get a nonzero positive integer from the keyboard and return it to the caller. int get_input() -If input …  |
| | /*this program has been condensed from over 2400 word combinations down to 27 It is for arranging the meanings of words in the order the words were written. Many words have several meanings (descriptions). */ [CODE] #include <stdio.h> #include <stdlib.h> #include <conio.h> #include <ctype.h> #define TRUE 1 #define FALSE !TRUE … |
| | I have a C++ midterm due tomorrow that I can't figure out. Here is the assignment: [code] // Use the program BtoDsol.cpp located at: BtoDSol.cpp // which converts any byte to decimal // enhance the driver program to test an additional function DtoB with a prototype of: // string DtoB … |
| | I'm trying to write a program to calculate a bill for a user after they enter in some details. It doesn't allow the user to enter in a value for the 'use code', instead skipping that step. Below is only a rough draft of the program, there's plenty still to …  |
| | about this program which wants only 0 and 1 integers in its input...if other digits it will say error/// how to determine it?? i don't know is it printf("enter a value\n"); scanf("%d",&value); if(value2=0; value%2=1,value++){ printf("error\n"); } else continue. how to do it..? i dont get the idea for geting only … |
| | I am trying to make a bank C++ program but the problem is that when the program terminates, data is lost and when I start it again, it reinitializes. Can someone tell me how to save the information in my harddrive and not my RAM?  |
| | hi to all it is a circle program not running , giving erorrs on my c language but it is working on my friend computer (c language) here is code ; [ICODE]#include<stdio.h> #include<conio.h> #include<graphics.h> #include<dos.h> int main () { int driver,mode, i; detectgraph(&driver,&mode); initgraph(&driver,&mode,"...\\ bgi"); setcolor(8); for(i=10;i<201;i++) { sound(i); circle(300,200,i); …  |
| | if i want to search a target which is the same as my input in a array that is 2D.. what methods is more efficient?? binary search or linear search.. which is highly recommended? help me because i have to use it?  |
| | Hello~ I am doing my Final Year Project in my university about p2p video streaming. Since we have to write custom directShow filter so we have to write streaming using c++. I only know basic c++network programming. (1)I would like to know if there is any source code available on … |
| | My program uses a buffer to store data as entered by the user, so that the size of the buffer depends on them. The first thing that came to mind is that I would reallocate memory each time more storage is needed, but that doesn't seem reasonable as the data … |
| | Hello, Here is my problem: I declare the vector struct in my .h file and then try to access its fields in the .c file. I did declare a variable of type vector. However, I get a compiler error saying that 'vector has no member named' [x] where x is … |
| | HI, I want to sort the elements of an array in ascending order. The elements are in floating point. how do i go about doing this? Thanks for your help. Nishant |
 | Hi guys, By any chance do any of you guys know any way to implement an array of linked list without using vector, since i need to implement an array of linked list using c and unfortunately vector library is unavailable. This is what i did: [code] Struct MyList{ int … |
| | Hello, I just need help converting this baby in plain old vanilla C. You can tell me the equivalents of C to C++ or whatever is more convenient for you. I'm compiling in MS Visual Studio C++ 2008 and it gives me mostly "undeclared identifiers" and "syntax errors". Thanks in … |
 | Could anyone explain me, how these two [B]*(ptr + i) = i; and *(ptr + (i - 1);[/B] process to get the result ? I don't understand that syntax, could anyone tell me in clearer way? [CODE=c] #include <stdio.h> #include <stdlib.h> int main() { int i; int *ptr; int number; … |
 | H! Could any one please tell me with some proper explanation for: [B]Where dose Global, Static, Local, Register variables stored in memory?[/B] |
| | where can i find tutorial on how to store data from turbo c to excell ? mars key, to mars and beyond |
| | PLEASE HELP!!! I dont know how to do this problem. Every time i try it keeps coming out wrong. PLEASE HELP. Thank you... An internet service provider has three different subscription package for its customer: Package A: For $9.95 per month 10 hours of access are provided. Additional hours are …  |
| | How can I change a character of a string within an array of strings? An execution error happens if I run the code below.. [code=c] int main(int argc, char *argv[]) { char *d[] = {"aaaa","bbbb","cccc"}; cout << d[2] << endl; //PRINT cccc d[2][2] = 'x'; cout << d[2] << endl; … |
| | Hi, For last one week I have been trying to do conversions between UTF8, Multibyte, Wide Character and Ascii... Finally managed to code a working program... Thought this might help some one, so posting it here... If there are any errors, please point out... If you have any doubts please … |
| | I have been programming in C for many years, but I have just started using GCC/Eclipse for a new project to develop a product using an embedded ARM processor. I have found a problem that hasn't existed in previous C compilers I have used: I have created a define as … |
| | An encoded file will be decoded by the program using a key input from the user. This key is a sequence of numbers that will scramble the message in the file into its appropriate order. I have to use linked lists for this. I already started it, but I can't … |
| | can somebody help me this code cannot run. I can't find the error... [code=c] #include <stdio.h> #include <conio.h> #include <ctype.h> #include<stdlib.h> //use for fflush and exit(0) #include<string.h> //use for strcpy void calculate(); void insert(); void exit(); #define TRUE 1 void calculate_and_sort(int end_of_file); int input1; char ch; typedef struct{ int num; …  |
| | can someone help how to develop a chat program in c. the program must run in the linux terminal and have a layout like yahoo messenger. it must have a area in which the user's can be seen, text area and an area in which one could the on going … |
| | hello, I know linux has this mechanism I wanna implement it in windows 2003 and I've done some parts but one point: writer must wait until all the reader finished. hint: I don't want a loop in the mutex critical-section to subtract the semaphore by plural number,which can't be directly … |
| | Hi Could anybody help me to clear that out. Just go step by step and try to explain it to me. I would appreciate it Thanks [attach]7727[/attach] The answer for that one: At the end: c1 -- 40 (hex) and c2 -- DC (hex) [attach]7726[/attach] The answer for that one: … |
 | Hey guys, I was wondering if realloc() copied the contents of the block of memory to the new block "on most compilers" IF the new size is bigger. I like to learn good ways to program something, but don't want to reinvent realloc just because it doesn't work on <reallyoldcompiler>. … |
| | i guys Using socket programing i am trying to write a proxy server. when i start to read headers that has been sent from the browser it will initially dispaly some headers and after that it goes blank. simply becomes idle .. it does not return the controle to the … |
| | I'm trying this tutorial using the get system metrics functions so what i did was to include the windows.h preprocessor directive although when i'm trying to compile my program i get th e error "undefined symbol '_GetSystemMetrics@4'. I'm using TCC as my compiler. |
| | Hello! I am working on some code for a program that squares,sums and divides 3 numbers: [code=cplus] int num,sq,sumd; int a; int b; int c; printf ("Please enter a positive integer for a/n"); //input scanf ("%d", &a); printf ("Please enter a positive integer for b/n"); //input scanf ("%d", &b); printf … |
| | Hi, I want to read .wav file from the any directory in windowsXP and draw the graph of that particular file using C or C++ code.. Can anyone help please????? |
| | Hi. The following calculator will return wrong values for operations which are more complicated than <INTEGER><OPERATION><INTEGER>. I suppose I'm making a mistake in parser.y, but I can't figure out what. I know there are mistakes, memory leaks and other technical issues I'm doing wrong, but please concentrate on my biggest … |
| | Hi All, I have this old c program that I did a while back on pascals triangle and i'm trying to convert it over to c#.net. Can anyone help me do this? I do not know much or anything on on c# Here is the code: [code=c] //Lyncob directory #include … |
| | Hello! I'm new to C programming and I have a question. I'm trying to write a C program that that can: Open a file (the file name is unknown) located within the same directory as the executable file, search through the contents of the file for a particular keyword (for … |
| | Lets say i did something like [code=cplusplus] { .... spGrades = fopen ("temp.txt","w"); fclose (spGrades) .... } [/code] where will be the temp.txt written to ? and how can we change the written location of the temp.txt ? thx in advance |
| | Hi, I have one query that: Can we write [B]a function similar to printf()[/B]? If it is possible then how could it be written? |
| | Hi I am working on a program that computes the sum of N in increments of 3. I do not have any errors but when you run the program it does not compute correctly for example if you enter 2 for n the sum should be 5 [code=cplusplus] #include "stdafx.h" … |
| | I wanted know if there's a way in c++ to know what character exists at a particular x,y coordinate. for eg: suppose i used [B]gotoxy(2,5)[/B] and my cursor is now at (2,5) and i want to know what character exists next to my cursor at (3,5). How can i know … |
| | I am working on printing a loop statement. I worked on this to try the concept: [code=cplus] #include "stdafx.h" #include "stdio.h" int main() { int times,num; for (times=1; times<3; times++) { for (num=1; num<5; num++) { printf("%d",num); } printf("\n"); } return 0; } [/code] What I need is to print …  |
| | Can anyone tell me why I'm getting "number 1" as my output when i enter arguments 1, 2, 3. It seems like its always 1 and I don't know why. [CODE]int main(int argc, char *argv[]) { if (argv[1] = "1"){ printf("number 1"); }else if(argv[1] = "2"){ printf("number 2"); }else if(argv[1] … |
| | Alright, i hope someone can give me a straight answer. How do i export integers to another function? Because when i compile and run this code, i get an error telling me: "[code]12 D:\test.cpp `numberr' undeclared (first use this function) [/code] The code i used was kinda like this : … |
| | Hellow.......! I need a help for: How will you declare [B]an array of three function pointers[/B] where each function receives two integers and returns a float? |
| | Hi, I have a query regarding to the storage of program that: Where dose [B]c-program instructions get stored[/B]? And where dose [B]local variables get stored in memory[/B]? |
| | I am trying to implement the GSL uniform random number generator into my C++ program. Below is my entire program and I am having difficulties getting it to run properly. Any help would be greatly appreciated. Thanks for your time! [code=cplusplus] #include <stdio.h> #include <iostream> #include <math.h> #include <cstdlib> #include … |
| | Hello Everybody, I need help. I have found some problem with my code and I could not seem to make it right. I need to sort data in a text file. this is my data in the text file Hitachi Ariff 12/5/08 12.567 2 Motorola Raju 12/5/08 15.658 2 Siemens … |
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