19,876 Topics
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| | I keep getting the warnings such as "warning: passing argument 2 of ‘strcmp’ makes pointer from integer without a cast" about strcmp and strdup. I'm pretty new to C and I feel like I've tried a million things with no luck...I don't really get what's going on. Any help would …  |
| | my true objective is to read back for the file into the structure but i am just not making any progress. I have placed an attachment of the file. I am just not comprehending all of the codes that i am seeing from the snippets. So can someone please give … |
| | Hey, I have another problem... I am using a FOR loop which is making a lot of lines. The problem is that the new lines "runs over" the first lines because there is no room for the new ones. In shortly, when a new line comes and have no room, … |
| | I these contents below written to a file.I want to user to input a number and i will then scan the file to see if it matches my registration number. But in doing this i just want to get the 1001 from the first line. REGISTRATION: 1001 NAME Donellie Whyte … |
| | Guys I am not a good C programmer. I ahve experience with object oriented paradigms such as Java and C# but I never programmed in C or Pascal. I have done some tutorials in C and I seem to grasp some of the ideas of the language but as I … |
| | Hi everyone, I'm kind of stuck, is this the correct notation to compare a char to double quotes? variable == "\"" |
| | please help me on this.. i have to make a payroll system using turbo C program but i don't know how to make it.. pretty please...:) |
| | IF i write to file REGISTRATION NUMBER :1001 how can read back from the file the 1001. Thank you for all your help,i have gotten other hints but they don't seem to work |
| | Hii friends.. this is [B]uday[/B] here.. i'm new to Daniweb.. [B]I want to learn programming in C .. Pls can u guide me hw cud i b a good programmer?.... [/B] |
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| | I'm working on my first game in C++ and SDL. The game compiles and runs perfectly on both my boxes (Arch Linux and Windows XP). When two of my friends were to test the game, one of them (running Windows Vista) said his machine BSoD'd every time he ran the … |
| | How can i call (execute) a file (with ".c" extention) from the particular path without including it into main file ? Now the file which we have to call from particular path is containing only a function (without "main()")..... |
| | My program is able to create the folder fine but I wanted to know if there is a way to put the date and time in the title? C++ and using Visual Studio 2008 for Windows. [CODE]system("mkdir %SYSTEMDRIVE%\\Blebble\\Blabble");[/CODE] |
| | Hello all, I have been assigned in my class to come up with a program that is written in c and generates prime numbers from 2 to n. I have coded the problem but i have a problem. Any numbers greater than 6479 will not return the results that I …  |
| | In the following program though most of the working part of the program is commented out, it gives seg fault. reducing the value of MAX to say 10000 removes the seg fault. Why is this happening? it should be only 1 MB only. Is 1 MB too big for an … |
| | A discrete time counter oscillator expressed in C code wil produce sine wave like signal: P,P+ and g represents the current phase, next phase value, and increment value respectively. To implement this in software the register is simply a variable that retains its value between updates and the look up … |
| | I have this sprite that I am printing out sf::Image aNimat; if(!aNimat.LoadFromFile("images/fish.png")) std::cout<<"File not found fish.png"<<std::endl; however I want to print it out at random places and in random numbers. Can anyone suggest how I would go about it? |
| | Hi, I recently came across a code which had the below lines. [code] unsigned int n = 10; n ^= (unsigned int) - 1 ; [/code] It is not clear to me what the second line does. Anyone can help please :) |
| | Hello all, long time since i've posted anything here. Working on a small project and nearing the end; however i am having some trouble regarding pointers to 'multidimensional' arrays, hopefully somebody can help me out. :) I have what i think is an array of 2D arrays of which I … |
| | Hi! My problems are more of porting a code to Windows, than the code itself. I need to download a file from a URL ( http://127.0.0.1/img.jpg ) and store it in a local file. I think I've screwed up the setting up of the libcurl libraries. I am using Visual … |
| | Hello, I have observed a data access misaligned error in my code. I am trying to isolate the issue and find reason for its occurrence. [code=c] float *mul; int main(void) { int i; mul=(float *)malloc(36000); *mul=0; for(i=1; i<9000; i++) { *(mul+i)=*(mul+(i-1))+(1/(float)(72000/2)); printf("%f\t", *(mul+i)); } free(mul); return 0; } [/code] Please … |
| | Hi Everyone, I'm making a windows mobile app in C# that aims to help those affected by Alzheimer's Disease Part of it needs to send text messages at 5 minute intervals, however, the rest of the C# program needs to continue at the same time. I know that when you … |
| | can u please tell me books ,links to learn c graphics i am very desperate to learn but not getting something i start from right now i have only graphics under c yashwant kanetkar plz help me out  |
| | My problem is how to seek or search a word from my text file. here how it done. I want to search a word "Computer" found in my text file, and will output or will be print of screen as "Computer been found!" if the keyword are found and will …  |
| | Hello Daniweb, I'm new to C and I need help with this basic calculator. It's supposed to calculate investment, only it never gives me the correct result Here is the source, [code] #include <stdio.h> #include <stdlib.h> #include <windows.h> #include <math.h> int main() { double result; int a; int b; int … |
| | Hii Friends This is the 1st time I am using a C# forum. I get a feeling that I have reached the right place. I am building a C# Windows Application. I have used WMP(Win Media Player) on my main form to run some URL. It's playing good,no probs there. …  |
| | Hello, I've been working with C trying to get factorials which I've successfully accomplished but my code needs to output an error message when inputting negative numbers, unfortunately my code outputs an error when using 1 and 0. This is what my code looks like (keep in mind I'm a … |
| | Hi , when i run the program i got the same out put by using memcpy and memmove but i dont understand the difference between them. manual page says that memory area should not overlap in memcpy but can in memmove. what is meant by moving memory and how its … |
| | Hi, I'm having a problem with signal handling between parent and child. What I'm trying to do is for both parent and child to be able to receive ctrl-z, however when the child receives ctrl-z, parent receives it as well and I don't want parent to do that. Any idea … |
| | Smiles dental centre requires a computer system that can maintain records on its patients as well as automate specific processes that take place daily. The centre has a dental surgeon, an orthodontist and a dentist. The orthodontist deals with customers with braces (new and existing customers); the dental surgeon will … |
| | Hello Daniweb! I'm a beginner and C, and trying to make a program that asks a question in the main and takes an input from the user which jumps to the appropriate function. Here is the source. [code] #include <stdio.h> #include <stdlib.h> #include <math.h> void cm(){ float a; double b; … |
| | Hello, I'm getting a segmentation fault in my code, at the IF statement. Can anyone tell me why? The printf() statement right before outputs the correct data, so *buffer definitely isn't null. Thanks for your help. [CODE]int main(int argc, char *argv[]) { FILE *inputFile, *rejects; char hold[200], hold2[30], *buffer = … |
| | Hi guys here is what I aim to do : Create a program which 1. reads in a string of less than 25 characters from the user 2. prints out the string followed by its reverse i.e. if the user enters "hello", the program should print "helloolleh". I can do … |
| | My aim is to create a program that: 1. reads in a string of less than 255 characters from the user into a variable called array1 2. copies array1 into a variable called array2, converting each element of array1 to UPPER CASE 3. prints out the contents of array2 I …  |
| | Hi guys, I have been trying to implement a shared circular queue between 2 processes. My structures are as follows: [code] typedef struct client_entry { long shmid; int pid; struct client_entry *next; struct client_entry *prev; } client_entry_t; typedef struct client_queue { unsigned int num_entries; long current_shmid; int notify; struct client_entry … |
| | My problem is when i try to include the function [B]funcString[/B] in my code and try to built it , i get this errors: [QUOTE]error C2065: 'ch' : undeclared identifier[/QUOTE] And when i remove the function [B]funcString[/B] i don't get any error and the programs runs perfectly. HERE is my … |
| | Hi there! I'm new to c++ and I'm having problems with ifstream. I assume that my question is pretty stupid but here you go: I've got something like: [code=c] ifstream infile(inname); [/code] Furthermore I do have an array - let's call it Array - which contains several filenames I want … |
| | Hi, I have been experiment with Recursion / Trasversal through directories recently but seem to have run into a few unexplainable errors. Attached is my source code which is a function (which has the path (input user directory) passed into it). What im hoping this function will do is detect … |
| | hello, i want to pass an array and 2 more integer elements in the routine of thread in pthread in c. i know i need to use structure for the same. i am using pointer to that structure in this case. i need to know--- what will happen if i … |
| | Hi, I have a qsort problem I just can't solve. I've got an array of pointers to a structure called struct mys. The structure has an int value called id. I want to use qsort to sort this array of pointers to structure in ascending order by the id value … |
| | I tried to compile this code but it keeps telling me error C2446: '>' : no conversion from 'double' to 'float *' and error C2440: '>' : cannot convert from 'double' to 'float [5]' But I already converted it to float. Is there anyone can help to figure this out? …  |
| | I just tested because i'll need soon the fopen function... Im using Visual C++ and i made a txt file in the root (didn't work so also tried to put in the source folder.. didn't work either) the text file's name is: Keywords.txt I tried this: [CODE]fopen("Keywords", "r");[/CODE] didn't work … |
| | Hi everybody, I'm looking for a way of getting a machine-specific string on windows, something like cpu or hard drive or bios serial #. It has to be implemented in c, not c++. I've already browsed the api quite a lot but I'm not sure (and I don't know windows … |
| | [I]<<thread split>>[/I] [CODE]#include <stdio.h> struct a { char aa; char ab; char ac; }; struct b { char b_a; char b_b; char b_c; char b_d; char b_e; char b_data[1]; }; int main() { struct b data_s; struct a *req; req =(struct a* )data_s.b_data; req->aa=3; req->ab=3; req->ac=25; printf("%x\n",data_s.b_data[0]); printf("%x\n",data_s.b_data[1]); printf("0x%x\n",data_s.b_data[2]); return … |
| | i need a c++ compiler with a graphical user interface which can easily be used and that contain many option like for example microsoft visual ,simply i can write the code on a gedit and compile it by using : g++ "file name" -o test ./test but it is so … |
| | Hi, I'm having a problem creating two child and manipulating signals. My problem with forking is that when I do: [code=c] int main() { pid = fork(); pid2 = fork(); } [/code] This create more than two forks, so how do i create exactly two forks? And for each child … |
| | i m a newbie in The pool of C plz tell me about these functions from absoulute basic.. I was studing C tutor and found these functions but cannot understand them.. plz tell me their exact functions breifly.. or u can also suggest me some ebooks.. free only.. Thnx in … |
| | people can you help me how to make a c language that has, add, edit, save, view, and link list delete? i do really need it for my project... please help me... |
| | Hi friends... I need to write a program in C which will print all the combinations of a string with non-repeating characters. Example: “Say” will have the following: S, a,y, Sa, Sy, aS,Sy, yS, ya, aSy,Sya,ySa and so on. The string length is not known. The string will be a … |
| | this is the problem area: [CODE]FILE* fp = fopen(file_name, "r"); if (fp == NULL) printf("couldn't open file\n"); char line[100]; while ((fscanf(fp, " %[^\n]", line) != EOF)) { printf("%s\n",line); clock_t start = clock(); perform_operation(line, 1); clock_t end = clock(); sprintf(log_msg, "time taken: %ld ms",(end-start)); log(log_msg); } sprintf(log_msg, "final tree"); if (fp … |
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