19,876 Topics
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| | Hi! I am Abdul-Majeed. I'm a new student to c. I tried writting a game for random multiplication calculation. This was a similer questions for me in my midterm exams. I need friends to inprove it for me. You can also find faults and make corrections to my code #include … |
 | Hi everyone and good morning :) . i want to simply read from the linux file "urandom" a random number and print it out on screen.just simple as that. this function should be in a file called myrandom.c ( myrandom.h must be made also, which has my function dekleration ) … |
| | Hello! I am a new c leaner. Can I call a function from a different function apart from the main ? And is this also part of recursive? |
| | Well I have this code on the knight's tour, where the user will input the knight's starting position. But the problem is, there's too many 9 when I print the output. What's wrong with my algo?? #include <stdio.h> main() { // INITIALYZING THE CHESS BOARD char c, d; // c …  |
| | I need the solution of this program using C++ .. Develop a database software to maintain the records of students of a college.The software should be user-friendly.The user can easiy add new records,update existing records,create reports of existing records etc. |
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| | **Guessing game. Write a c++ game that asks the user to guess a number between 1 and a 100. If you guessed correctly, it will say you win. If your too high or too low it will also let you know.** |
| | I want to scanf array of string in c char *bookName[n]; for(i = 0 ; i < n ; i++){ scanf("%s" , bookName[i]); } but it dose not work ,what is the problem ? |
 | Howdy all. I've recently been considering doing an online meeting or webcast on certain subjects for which I have a lot of experience or knowledge. The idea being that something too long or complex for a Daniweb article can be more easily shown by sharing my desktop and talking about … |
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| | I need help with the question ASAP please here's the question Write a C program to create and manipulate a one dimensional array (list) of up to a hundred sorted ( ascending order) numbers by using functions to insert, remove, or print elements as follows: Function insert : will search … |
 | Why the following code is giving me an error like this `make: *** [all] Segmentation fault (core dumped)` the source code is like this #include <stdio.h> int main() { int i; char* ptr = NULL; *(ptr + 0) = 'H'; *(ptr + 1) = 'e'; *(ptr + 2) = 'l'; … |
| | #include <stdio.h> #include <stdlib.h> #include <string.h> #include "memo_list.h" void shownotes(Memo item); char * s_gets(char * st, int n); int main() { List Notes; Memo temp; FILE *wfile,*sfile,*lfile,*rfile; char ch; char *line ; /* initialize */ InitializeList(&Notes); /*check IsFull? */ if (ListIsFull(&Notes)) { fprintf(stderr,"No memory available! Bye!\n"); exit(1); } puts("Enter char … |
| | Hello, I am currently doing my 8th sem project,my project is tracking of surgical instrument in hospital. what i am doing is i will be storing all the details of instrument which are used in operation, in local database. So after operation i will be sending all the instrument name … |
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| | i have a code which asks creates a structures and then for each it will check if the asks the user to enter a name and it will check if the name already exists within the database. if the name can be found , it will asks the user to … |
| | Hi , here is my code where i tried to separate the computation into a process and the I/O into another process. when i do compile there is no error, but when i run it; it goes spinning and spinning without stoping.. even i declared the lock variabe in a … |
| | Please l have single processor C code and I need to write it in multiprocessor with mutul exclusion. Can any ony one help me. I have uploaded C code as attachement  |
| | I cant get my intended result I want my program to display can anyone help me. The program is to print the workers name who are listed in the struct and if you don't enter any of those names I should print worker name doesn't exist. Can someone tell me … |
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| | I have to create function that reads the binary file of futball matches and shows the legue table. The table should contains, for each team, the name of the team, number of points, goals scored and goals conceded. Give 3 points for a win and 1 for a draw. The … |
| | #include <iostream> #include <fstream> #include <cstring> using namespace std; int va[20][2],i,j,iesire,intrare,st[21],as,ev,k=2,timp,mint=10000,d=0,t=0; float distanta,mind=10000; char comune[65][25]; struct intr { int t; float d; }v[65][65]; void init(int k,int st[21]) { st[k]=0; } void succesor(int k,int &as,int st[21]) { if(st[k]<65&&k<20) { st[k]++; as=1; } else { as=0; } } void valid(int k,int &ev,intr … |
| | Im trying to implement queue with a linked list i think i have the enqueue function correct but im having problems with the dequeue. I can get it to delete the first number but then the rest of the list is empty can someone point me in the right direction? … |
| | consider a vector R whose coordinates xyz are given by R1,R2 AND R3.the length of the vector R is calculated as R len=squareroot of R1Squared+R2squared+R3squared.write a c++ program to prompt the user for the vector coordinates values and calculate and display the vector R length.please help me with the code … |
| | I have these files.. **str.h** #ifndef _str_h_ #define _str_h_ struct STRSTR { char* MainStr; char* SubStr; }; char* str_str(int, int, struct STRSTR* sample); void init(char*, struct STRSTR* sample); #endif /* _str_h_ */ **str.c** #include "str.h" #include <stdio.h> void init(char* str, struct STRSTR* sample){ sample->MainStr = str; } char* str_str(int index, … |
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| | Hello, i was wondering if i could get an opinion on the following code as it is giving me a headache: int counter = 498853097; int k = 0; clock_t start, end; float seconds1,seconds2; start = clock(); for (int i = 0; i < counter; i++) { k++; } end … |
| | Please can someone help me and show me where i am going wrong ? The code below is not an assignment or homework it is something i am tryigng to do for work. The code scans a text file ( attached ) and stores 10 x 5 digit ints into …  |
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| | I am creating a doubly linked list and printing a backwards function. Everything is working great in my code, but when the function is printed in reverse, I need it to say NULL at the end, as it does going forward. When I put puts("NULL") (line 193) it splits up … |
| | How to concat multiple strings in C? I have a function for concat two strings: char* concat(char *s1, char *s2) { char *r, *t; int d1 = -1, d2 = -1; while (s1[++d1]); while (s2[++d2]); t = r = (char *)calloc(d1 + d2 + 1, sizeof(char)); while (*t++ = *s1++); … |
 | I have come across one question: find the size of two 2-D arrays when double pointers are given for them.Then find, if we can muliply these two matrices(those mathematics rules). finally we have to multiply the matrices. I have asked this question(small part of this question) earlier also. someone answered … |
| | I have class within class public class List { public int RecordCount { get; set; } public IEnumerable<ServiceElementItem> ServiceElement { get; set; } } public class ServiceElementItem { public int ServiceElementId { get; set; } public string ServiceElementBusinessId { get; set; } public string Description { get; set; } public … |
| | **Problems 1: Spiral matrix - Advanced** Source of the problem: [Here (not in English)](http://www.spoj.com/PTIT/problems/BCACM11B/) Spiral matrix is formed by filling number 1 in 1st row 1st column, after that, filling with increasing number by clockwise, example: 1 2 3 4 5 16 17 18 19 6 15 24 25 20 …  |
| | Here's the question : /* 4. Modify your showTree() function so that it produces the same output as dumpObjectTree() . QObject::A Stack Object QObject::Mike QObject::Greg QObject::Peter QObject::Bobby QObject::Carol QObject::Marcia QObject::Jan QObject::Cindy */ This is what i have thus far ... if(!childlst.isEmpty()) foreach(Person* t,childlst) { cout << "QObject::" << t->parent()->objectName() << … |
| | I am having a confusing time with understanding arrays and variables because of this reasoning: Variables are aliases for memory locations and array name is the address of the first element of the array then why are variables not accesssed as *i whereas the first element of array is accessed … |
 | I came across this code of [firefly algorithm](http://en.wikipedia.org/wiki/Firefly_algorithm) and need to use it in my major. If any of you could explain the working of the functions, it would be of great help to me. Thanks in advance. #include<iostream> #include<stdio.h> #include<stdlib.h> #include<math.h> #include<time.h> #include<string.h> #include<memory.h> #defineDUMP 1 #defineMAX_FFA 1000 #defineMAX_D … |
| | Hello, I am trying to compare a double to be within various ranges, but the comparison is not working correctly. Rounding precision is not a concern, because if the value will match the boundaries so rarely, and it is rounding up to the higher range is acceptable. Below is the … |
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 | Here is the code for [B][COLOR="Red"]Insertion Sort, Bubble Sort and Selection Sort[/COLOR][/B] [B]Insertion Sort[/B] [CODE] #include <stdio.h> main() { int i,j,key; int a[5]={5,2,3,4,1}; for(i=1;i<5;i++) { key=a[i]; while(i>0 && a[i-1]>key) { j=a[i]; a[i]=a[i-1]; a[i-1]=j; --i; } } int k; for(k=0;k<5;k++) {printf("%d ", a[k]);} printf("\n"); } [/CODE] [B]Bubble Sort[/B] [CODE] #include <stdio.h> … |
| | hi everyone , i have worked on this 2 days now and cant find my mistakes , the program runs but it stops ( waiting ) after i enter 3 or 4 . can anyone help me where are my mistakes please? thanks allot. the program should do the following … |
| | I have a C code written in Visual C++ 2010 environment and it compiles without errors. When I try to debug it, after the line with scanf() function it goes to unknown scope and stops the process of debugging. How to fix this? Thanks for replies. |
| | The following code creates a Sorting Array using Pointers and functions correctly. The issue I have is I want the array to sort, but put the zeros at the end. Any help would appreciated. #include <iostream> using namespace std; #include <iomanip> using std::setw; void selectionSort( int * const, const int … |
| | Which tool for code analysis is the best for complex C programs? I use GCC debugger with Code Blocks 13.12 Thanks for replies. |
 | Hey I was wondering how to generate a Windows popup in C. I mean by "Windows popup" as in (for example) when you do a net send message to a PC, a simple Windows popup comes up on the PC you sent the message to with the message. How can … |
| | I need help with recursion function. It prints all the prime factors of an input number. My question is how to modify function so that START-GOTO is replaced by a loop? Here is the code: int f(int n,int i) { start: if(n==1) goto start; if(n % i == 0) { … |
| | What is the output of program segment: vecList: push_back(3); vecList: push_back(5); vecList: push_back(7); vceIt = vceList.begin( ); ++vecIt; vecList.erase(vecIt); vecList.push_back(9); copy(vecList.begin( ), vecList( ).end( ), screen); cout << end1;  |
| | hi guys i've written an bare OS and now im trying to go a little furthur and create a very simple GUI for it . but i have no idea how to create such a thing . my os is running in text_mode though i can change to some other … |
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