[c] Forum Topics

I've started using Dev-C++ and was creating a game with Allegro, I've created a background named 'Script1.c' and I also made a game map called 'Script2.c'. I've done this at the end of 'Script1' while(!key[KEY_ESC]); exit_allegro(); and I put at the top of Script1 #include <Script2.c> But I'm unsure if …

Hello All, I wrote the following code to access a file, assign pointers to the contents of the file, display the file as a matrix, read the last line as a separate matrix, then I am supposed to perform matrix multiplication on the two aforementioned matricies. I have the first …

I believe the error has something to do with my mergeArray function. Its a modified version of the insertNode function. i tried to make it so that i can loop through and insert an entire array of elements into a linkedList. My program compiles without error but gives me a …

Hello all, I keep getting a segmentation fault when I run this compiled program. [CODE] #include <string.h> #include <stdio.h> #include <stdlib.h> #include "person.h" /* write a struct to the file */ void WritePersonFixedLength(struct person * input, FILE * target) { //use fprintf to write input->firstname '%-20s' fprintf(target, "%-20s", input->firstname); //use …

I'm supposed to write a program that will search for longest common substrings in two strings of DNA. Our hint was to look on wikipedia ([URL="http://en.wikipedia.org/wiki/Longest_common_substring_problem#Dynamic_programming"]http://en.wikipedia.org/wiki/Longest_common_substring_problem#Dynamic_programming[/URL]). I did that and I understand the principle of comparing two strings. I'm currently facing two problems. First one is array allocation. When I …

I have a project where I need to add binary numbers using C language. I don't know where to start. Help?

When I run this code: [code=c] window_handle = CreateWindow("OpenGL", title, style, 0, 0, width, height, NULL, NULL, window_instance, NULL); if (!window_handle) { GL_KillWindow (); MessageBox (NULL, "Window creation error", "ERROR", MB_OK | MB_ICONEXCLAMATION); return false; } [/code] CreateWindow returns NULL. What are the reasons that could cause CreateWindow to fail? …

[CODE]do { ++temp_week; system("cls"); printf("\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"); printf("\t\t ******** MARKING OF ATTENDANCE ********\n"); printf("\t\t PRESENT = 1 ABSENT = 0\n\n"); for(i=0; fscanf(ReadFile,"%d|", &Student[i].studNo) != EOF; i++) …

I have this struct for an item in a to-do list [code=c] struct Task { char description[TASK_DESC_SIZE]; /* description of the task */ int priority; /* task priority */ }; [/code] i'm just not sure how to alter the description while making a task using this [code=c] TYPE createTask (int …

[B]Simple Question: Please read[/B] I have the following code snippet from my program that i am working on [CODE] bit running = 0; float var1, average_value; void is_something_running(void) { if (fabs(var1 - average_value) <= 0.001){ return *(&running) = 0; } else return *(&running) = 1; }[/CODE] var1 and average value …

I am not getting the codes to swap twp numbers using a third variable.as i am a beginner.PLEASE HELP ME

Can anyone help me improve my source code below? I tried fixing it but apparently, there's not much success. [CODE] #define NUM_THREADS1 1 void *go_to_website2(void *program); void *go_to_website1(void *program) { char* str[3]; str[0] = (char *)program; str[1] = "http://www.google.com"; //supposedly 2nd website to go to str[2] = '\0'; char* new_prog …

I am trying to understand usage of keyword __attribute in C I have checked following two pages [url]http://unixwiz.net/techtips/gnu-c-attributes.html[/url] and this page also [url]http://gcc.gnu.org/onlinedocs/gcc-4.0.0/gcc/Function-Attributes.html[/url] but still I could not understand where do I declare them and how I can use __attribute in my program. To test this I wrote a C …

Hi everyone! I just want to ask, how do I use socket programming in C to open/go to web sites? I want to create a program that should look like this: the program asks for an integer input from the user and depending on the input number, the program invokes …

need help on single and multidimensional array...

On this link [url]http://lxr.free-electrons.com/source/drivers/parport/parport_pc.c?v=2.6.29#L97[/url] they defined a structure superio_struct and initialized as [CODE=c]superios[NR_SUPERIOS] = { {0,},};[/CODE] I am not able to understand above initialization has what is it getting initialized to. What I deduce till now is superios is a structure array of struct superio_struct and NR_SUPERIOS is defined as …

I am making a program that reads football player stats from a file and places it in an array how ever my program seems to over read the file which has the stats of 17 players and it makes an array of 101 players with the first 17 being alright …

i have a problem here. [CODE][/CODE] #include<stdio.h> int main (){ int counter; int x; int y; int product; counter=1; x=1; y=1; product=1; while (counter<=5){ printf("%d>%d\n",x,y); x=x+1; y=y+2; counter=counter+1; product=product*y; } printf("Product>%d",product); return 0; } well,the product should be 945.but what have printf out is 10395?what is the provlem inside the …

here is the things so far i got. [CODE][/CODE] #include <stdio.h> int CF(int C); int FC(int F); int main(){ printf("Fahrenheit equivalents of Celsius temperature\n"); printf("Celsius \t Fahrenheit \n"); for (x=0;x<=100;x++); printf("Celsius equivalents of Fahrenheit temperature\n"); printf("Fahrenheit \t Celsius \n"); for (x=32;x<=212;x++); Pls,somebody help me.T.T

first we read something from the text files ( INT type only ), then i want read till "\n" stop and inceasement a value, examples, [CODE] int Attendance[10][10]; ExistingFile = fopen("Attendance.txt", "w"); if(!ExistingFile) { printf("\t\t This File Cannot Be Open Successfully!!\n"); printf("\t\t Please Check It!!\n"); exit(-1); } else { fprintf(ExistingFile, …

Hi, i have question about accept call interrupting. As you can see I have a loop which is controlled by boolean [B]not_ended[/B]. I set this var to 0 (false) in a separate function. I would like to know how should I [U]manage to interrupt this accept loop properly[/U]. When I …

[CODE]#include <stdio.h> #include <windows.h> #include <stdlib.h> DWORD WINAPI test_thread(LPVOID lpParam) { printf("thread whiiiii\n"); struct person { char *namee; int agee; }; struct person p = ((struct person)lpParam; printf("%s\n",p.agee); ExitThread(0); } int main() { struct person { char *name; int age; }; DWORD thread; struct person p; p.name = "John Smith"; …

Hi, I compiled the sample provided by Microsoft which created 3 files. Those are instlsp.exe, nonifslsp.dll, ifslsp.dll. So I installed it with instlsp.exe -i -o 1002 -o 1003 -o 1004 -n "Foobar" -d nonifslsp.dll Well its installed perfectly. But when now I tried open any web page, not opening. 1) …

Hello there, I have an issue with execvp to a project in C i'm trying to procces.. Execvp is always returning -1.. and this warning " passing argument 2 of ‘execvp’ from incompatible pointer type" .. here's the source code, and any advice at the matter would be appreciated! [CODE]#include …

Hi all! I would like to get more hands on programming for the languages I currently know: C Java C++ (studying now) The best way I figured is to join open source project and try to contribute. One place I found is SourceForge but I was wondering if any one …

Hi friends I likes to study symbian mobile application development. I had knowledge of C,C++ , PHP ... Please suggest me a course or some books. Thanks in advance Rajeesh

I am trying to use Qt 4.0 with devCpp. I have a weird error when i try to compile this simple code : [code] #include <QtGui/QApplication> int main(int argc, char *argv[]) { QApplication qApp(argc, argv); return qApp.exec(); } [/code] The error is : [code] 10 : no matching function for …

I am trying to write a program that does operations with rational numbers. My program runs and is able to add, subtract, multiply and divide. However, it does nto reduce the fraction and when printing in decimal form, it returns an int rather than a double. For example, it would …

Hi, I have a problem with my code in C An error occurs with message : /usr/lib/gcc/x86_64-redhat-linux/3.4.6/../../../../lib64/crt1.o(.text+0x21): In function `_start': : undefined reference to `main' collect2: ld returned 1 exit status Does anyone know for it ? Thanks a lot

Hi everyone, I just got a problem referencing void pointer. If in my code, I replace *rbuf= &svar by (rbuf= &svar;); it does not complain but it does not return the real value (rbuf is a void pointer). Please Can anyone give me any advise. I would really apreciated /*****************************************************/ …

The purpose of this is to obtain a genuine critique of my source code (based on a fairly simple concept). I realize I may not have the cleanest implementation for testing for prime, due to the fact I am not an aspiring mathematician. I am interested on critique of the …

Hi all! I have been given the task to modify the code below so that it can do subtraction, multiplaction and division, not just addition. Could someone help me with this and explain what the strncpy does? I'm so confused!! // C Parsing Adder program #include <stdio.h> #include <string.h> // …

I couldn't find a decent C network programming book for windows. Can anybody help me?

Hi everyone! Does anyone here know how to create a C program that will open a web browser depending on the user input? For example if the user inputs the integer 1, the web browser will be opened and will go to 'http://www.daniweb.com', when the input is 2, 'http://www.google.com' will …

I am having a programming exam ,and we have studied arrays ,files ,and linkedlist ,hash tables ::the question is in what cases is the best choice to use one of these !! because most of the mark goes to how & what kind i used in implementing the program that …

Can anyone help me improve my source code below? I tried fixing it but apparently, there's not much success. [CODE] #define NUM_THREADS1 1 void *go_to_website2(void *program); void *go_to_website1(void *program) { char* str[3]; str[0] = (char *)program; str[1] = "http://www.google.com"; //supposedly 2nd website to go to str[2] = '\0'; char* new_prog …

Hello. I have a question regarding a task I was given. It goes : Fill the array with random numbers and then print out how many times theyve appeared like so : [CODE] /* ARRAY : 0 0 0 0 1 1 1 2 2 2 2 2 6 6 …

do you have c code or simulator for garbage collection techniques

char* ...is it similar to char var[5]; int *x; x = & var[0]; ?

Hello guys.. I have this makefile: [CODE=c] MyMatrix‬‬: MyMatrix.o gcc MyMatrix.o -o MyMatrix MyMatrix.o: MyMatrix.c gcc -c MyMatrix.c MyStringMain: MyString.o MyStringMain.o gcc MyString.o MyStringMain.o -o MyString -o MyStringRun MyStringMain.o: MyStringMain.c MyString.c MyString.h gcc -c MyStringMain.c MyString.o: MyString.c MyString.h gcc -c MyString.c .PHONY:clean clean: rm -f *.o test.out [/CODE] For some …

Can anyone help me with searching for a particular address in a given range in C. like i have to search for *ptr in range specified by *high and *low. i think it is not same as linear search. can someone provide some input. thanks.

Hi all, I need to have a program to word count remove punctuation and sort it in alphabetical order. I had done the word count portion but i am lost in removing punctuation and sorting in alphabetical order portion. Hoping to get some help. [code] #include <fstream> #include <iterator> #include …

Hi, I am trying to make a Picture viewer for my BS Computer Science 1st Year Project in [B]Turbo C Compiler[/B]. I have to stick with this compiler atm. I want to be able to display BMP,PNGs and JPEGs [TIFF and others too if it won't be very difficult]. I …

Hello, I am really confused and not able to make decision about how to begin learning programming languages. I've done C,C++ and 2 projects of ASP.Net with C#. But, now I've [B]forgotten most of the concepts of C++(like constructors,structures,classes and even the basic programs like Fibonacci series and other tricky …

Below is the program for swapping variables without any extra variable. [CODE] #include "stdio.h" #include "conio.h" void main() { int a=7;b=5; clrscr(); a=a+b; b=a-b; a=a-b; getch(); }[/CODE]

I've finished a void display function for an in-game menu. I'm trying to have the menu stay at the top of the cmd for the length of the game. However, since it's a separate function, the program stays in the menu function, and never reaches the functions that follow it. …

Hi guys, I would like to add a char to the end of a char* So imagine the following: char* test = "ABC" I want to add D to the end of it to get test == "ABCD" for the sake of argument, I can not use strcat as I …

Hi, Im trying to make a caesar cipher, but a windows error comes up when running. Where have I gone wrong?? Sam [CODE]///////////////////////////////////////////////// /// /// /// NAME: SAM BERWICK /// /// DATE: 18/11/2010 /// /// PROJECT: CAESAR CIPHER /// /// /// //////////////////////////////////////////////// #include <stdio.h> /// Stand In/Output #include <string.h> /// …

I want to make a button in a root window.My question is should i draw it or shoud i make a new window in my root window?

So basically it involves sodding scanf(). [CODE]int NumericalAnswer; int score = 0; main() { printf("Question 1: What's 4 x 3?\n"); scanf("%d\n", &NumericalAnswer); if (NumericalAnswer == 12){ printf("You got it right!"); score += 1; } }[/CODE] Output [ICODE]Question 1: What's 4 x 3? 12 9 You got it right![/ICODE] As you …