19,876 Topics
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| | Dear guys, I get stuck in a basic problem that is often overlooked. Like this , I can write code in such way. 1.#include"stdio.h" 2.void main#void#{ 3. double x; 4. scanf#"%f",&x#; 5. printf#"%f",x#; 6. } When I input a number like 3.0 ,however the result is a minus number. I …  |
| | Hello do you know whats wrong with this code? #include <stdio.h> #include <allegro5\allegro5.h> #include <allegro5\allegro_primitives.h> #include <allegro5\allegro_image.h> int main() { al_init(); FILE* pFile; return 0; } If I compile it, it fails and output is: main.c 1>c:\users\beda\documents\visual studio 2010\projects\c allegro\c allegro\main.c(9): error C2143: syntax error : missing ';' before 'type' …  |
| | I need help in running a program that makes a SLR Parser Table. Here is the code : Code to find first and follow: saved as SLR.h #include<stdio.h> #include<ctype.h> #include<conio.h> #include<stdlib.h> #include<string.h> #include<iostream.h> #define epsilon '^' // since I didn't know how to type epsilon symbol temporily I am using … |
| | How to make this program #include <stdio.h> #include <conio.h> #include <math.h> int main(){ clrscr(); for(i=0;i<10;i++) for(j=0;j<10;j++) printf("a[%d][%d] = %d \n",i,j,a[i][j]); printf("cu pointer\n"); for(i=0;i<10;i++) for(j=0;j<10;j++) printf("a[%d][%d] = %d \n",i,j,*(p+i)); getch(); } int a[4][4],b4[3][3],b1[3][3],b2[3][3],b3[3][3],n,c1,c2,c3,c4,i,j; printf("\nIntroduceti elementele Matricei cu 4 linii si 4 coloane: \n"); int *mat; n=4; for (i=0; i<n; i++){ for … |
| | Hello! I'm having a slight problem with a event... What I'm basically trying to do is: Activate a on button event, that fetches source code, then posts it within the edit window with "SetWindowText(hTextBox, get_source("website", "path"));". Sadly, this didn't quite work out that well, as I recieve a Run- Time … |
| | I am a newbie in programming and I'm using visual studio. i typed in this #include <stdio.h> #include <conio.h> #define PI 3.1416 void main(void) { float radius, circumference, area; radius = 2.5; circumference = 2 * PI * radius; area = PI * radius * radius; printf("radius of a circle … |
| | If I have to do the basic tree with these declarations typedef struct item { char petname[20]; char petkind[20]; } Item; typedef struct node { Item item; struct node * left; /* pointer to right branch */ struct node * right; /* pointer to left branch */ } Node; typedef … |
| | Hi there guys, I have homework to do a program given as input a document read from a text file will similatae MS words word count tool to create the following statistic: number of word: 45 number of line: 30 number of white space character: 73 number of non white …  |
| | how to copy pointer to pointer. char *name1; //store the value of DAVE char *name2; if name2 was a array i would have done. strcpy(name2,name1); but i dont know how to copy pointer into pointer. i was thinking some thing like this. name2 = name1? also do i need to … |
| | trying to build linked list that sort it selft. but this code below doesnt work. this part of code should insert a node in order. for ex. if i have a linked list of age 1 3 4 5. and if i insert(3) than result should be 1 2 3 …  |
| | hi everyone I'm working currently with linked list , and there's a problem with my code , the link is writing the same place every time (it replaces the previous values with the new ones without inserting a new one ) can anyone help ? Thanks in advance #include<stdio.h> #include<unistd.h> … |
| | Hey, this is one of the exam review questions, and I'm wondering how I would return 1 or 0 for bad input (i.e. cant divide by input 0) using return 0 and 1 if the function doesn't accept returns, i.e. void function (int variable) //cant have return statement. Here is … |
| | for (y = 1; y < num1 + 1; y++) { for(x = 1; x < num2 + 1; x++) { if (y >= 1 && y <= 4 && x >= 1 ) { printf ("%d x %d = %d", y, x, y*x); printf (" || "); } else …  |
| | Hello everyone! I tried a lot to understand the spacing procedure in pascal triangle.. but it all went to vein!! Does anyone knows about this spacing??? Why are we using this loop: for(x=40-3*y;x>0;--x) printf(" "); need help ASAP!! |
 | I just want to know the exact difference between intialising and assigning a variable. Is it possible to initialise a variable multiple times in C prog or is it just initialise once n assign all the other time...can somebody help me out please.  |
| | I am fairly new at C++ and Im having a lot of trouble understanding how to do it. This is part of a homework assignment due next week and I have no idea how to even start it (much less finish coding it). Can anyone out there help? ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: Create …  |
 | I am trying to learn how to write a merge sort function, but I have only gotten so far with the book I am using now: [code] template <class T> void mergeSort(vector<T>& s) { mergeHelper(s.begin(), 0, s.size()); } template <class Itr> void mergeHelper(Itr start, unsigned int low, unsigned int high) … |
 | Hi friend! I wanna create my own online sms site. But I stuck with something. That is, i got an open source gateway called [kannel](http://www.kannel.org) But what I want to know is,what are the key ingredients for an online sms service. I mean the stuff i want to create online … |
| | I am trying to parallelize the [Guibas Stolfi delaunay triangulation](http://goanna.cs.rmit.edu.au/~gl/research/comp_geom/delaunay/delaunay.html) using openmp. There are two things to parallelize here- the mergesort(),which i did and the divide() where I am stuck. I have tried all possible approaches but in vain. The approach followed(divide n conquer) in divide() is same as that … |
| | Hi every one, #include <stdio.h> #include <conio.h> #define SIZE 4 int main(){ char Menu[SIZE] = {'A','B','C','D'}; int i; for(i=0; i<(SIZE); i++){ // print the array elements printf("\t%c",Menu[i]); } getch(); } I want to swap the elements of the array for e.g. if I pass A and D or Menu[0], Menu[3], … |
| | I was just experiminting with the following C code and i noticed something interesting.. The first loop runs fine, but from the second loop the variable r1 occupies the kernel address space(ffffffffe) and instead of randomly changing as it is supposed to, all the consecutive loops show r1 as occupying … |
| | The problem is simple. I have LoadLibrary on my c++ app and I want to load c# library but I don't know the entry point. |
 | I'm trying my hand at OpenCV and have run into a problem that Dr. Google hasn't been able to help me out with. According to O'Reilly, the following code should play an AVI file in a window the program creates. [CODE] #include "highgui.h" #include <stdio.h> int main( int argc, char** … |
| | *i am trying to copy the value of ar2[10] //in main. has the value 1,2,3,4,5 in ar[10] //(in struct node). empty array so to copy the value iam not sure if i could use a strcpy for ex, strcpy(head->ar, ar2); //here is my code struct node { int ar[10]; //empty … |
| | Okay, I know there is a prior article about this, but I used { } with my if statements, and it's still not working... is it because I have multiple if statements consecutively after another? #include <stdio.h> #include <stdlib.h> #include <time.h> int i, n,t, s[51],p=1,a,b,c; int main() { srand(1); for(i=0;i<=51;i++) …  |
| | Hello! I want to ask you guys if anyone can help me correct my current program to read graph from a file instead of adding manual matrix in program. Example graph: graph.txt 8 1 2 3 1 3 6 1 8 1 2 3 2 2 8 2 3 4 … |
| | Is there any standard function in gcc that is equivalent to getch() so that I can read the input without hitting enter key? |
| | I wrote this program... Just gave a try!! i got a problem with searching a string in file.. the **"checkp"** used in the login function, returns a value **"1"**, whereas it must return a value **"0"** Hence my program fails... what i felt is, the file i'm opening, **"web_reg.txt"**, in … |
 | a class of 20 students. The information of each student contains ID, Name, Sex,exam Scores (3 quizzes per semester), mid-term score, final score, and total score #include<stdio.h> #include<conio.h> void main() { struct student { int id; char name[20]; char sex; int mid; int final; int total=mid+final }; int i struct … |
| | #include<stdio.h> #include<conio.h> void main() { struct student { int id; char name[20]; char sex; int mid; int final; int total=mid+final }; int i struct student b [19]; for(i=0;i<20;i++); { printf("student %d enter your details\n\n",i+1); printf("enter your id"); scanf("%d",&b.id); printf("enter your name\n"); fflush(stdin); scanf("%s",&b.name); printf("enter your sex\n"); fflush(stdin); scanf("%c",&b.sex"); printf("enter mid … |
| | iam trying to store all the data in to a struct so i can change it later. //this data is in file abc 1 11 22 def 2 33 ghi 0 22 11 33 asd 2 i was planing on making a array of structs. so 1st line will have … |
| | trying to copy pointer in array. lets say *pointer has the value "COMPUTER". and i want to store in array[o]; note: i want to use strcat to do this and i do not want to do some thing like "array[0]" char test[10]; char *point; //has the value "COMPUTER" for(int i … |
| | include<stdio.h> struct address{ char city[20],country[20],state[20]; }; struct customer{ int acount; char name[20]; float bal; struct address add; }; void display(struct customer * ,int); void main() { int i,size; printf("enter the number of customers"); scanf("%d",&size); struct customer cus[size]; struct customer * c[size]; for(i=0;i<size;i++) { printf("!"); scanf("%s",&cus[i].name); printf("!"); scanf("%d",&cus[i].acount); printf("!"); scanf("%f",&cus[i].bal); printf("!"); … |
| | Hi! I'm currently making a HTTP protocol bot, it works somewhat fine with a fixed char array, but once there's a website that exeeds 8k, then it cuts off. If it's less, I get weird nonsenscial symbols... Is there a way to know the length before assiging the data to … |
 | well i have two questions: 1-hey i was wondering is there a library or namespace in c# for creating databases? like anydbm with python?or anyway to do it? 2-witch faster? getting data from huge database or getting it from like a huge database devided to multi database i mean witch …  |
| | i have this c++ code and i wondered how ot would be in c #include <vector> // for vector #include <sstream> // for stringstream #include <iostream> #include <string> using namespace std; int main() { stringstream ss; string input, temp; vector<string> comand; cout << ">: "; getline(cin, input); ss << input; … |
| | I am trying to use the glib HashTable implementation for my code and facing some issues in memory allocations. The code I've written is: GHashTable *g_hash_table; g_hash_table = g_hash_table_new (g_direct_hash, g_direct_equal); gint *port, *src_value, *value; guint32 *dst_key, *key; . . . while(1) { key = g_malloc (sizeof *key); dst_key = … |
| | Hello, I am having trouble with my code. it does not seem to be comparing the two hands correctly I would really appreciate it if someone could take a look at it and tell me where i am going wrong. #include <stdio.h> #include <stdlib.h> #include <string.h> #include <time.h> #define TOTAL_CARD_DECK … |
| | sorry but i still cant understand what is different betweeen Thread and Process in c# what to use? |
| | #include <iostream> #include <fstream> #include <string> using namespace std; int main () { string cosid1, cosid2; int no_cos=0, nostu1=0, nostu2=0; double score, total_1=0, total_2=0, avg_1=0, avg_2=0, avg_group1=0,avg_group2=0; ifstream group1, group2; ofstream outgroup; group1.open ("group1.txt"); group2.open ("group2.txt"); if (!group1 || !group2) { cout<<"Unable file"<<endl; cout<<"Programs terminates"<<endl; } outgroup.open("totalgroup.txt"); outgroup<<"Course ID"<<'\t'<<"Group No"<<'\t'<<"Course …  |
| | #include <stdio.h> int main() { int a[0]; int b=2; printf("%X",a); return 0; } Where ever can we use 'a[0]' means array with index zero.. |
| | **The program below wont run due to the following errors :** *MSVCRTD.lib(crtexe.obj) : error LNK2019: unresolved external symbol _main referenced in function ___tmainCRTStartup fatal error LNK1120: 1 unresolved externals* **Please help me to solve these errors.** #include<stdio.h> #include<conio.h> #include<Windows.h> int Choice=1; char opt; int ch=0; void Main() { while (ch!=4) … |
| | I have done this code 5 times in my program for different classes and variables and it has worked fine for 4 of them but the 5th is giving a segmentation fault. The error occurs just after the cout saying 'here' in the main.cpp code below I have run valgrind … |
| | I got an assignment which I don't even know how to start, I have a path to a driver & its name (Argv) and I need to create a code that will install this driver automatically. If anyone even has an idea how to make this code generic I would … |
| | I have an assignment question . We need to simulate FCFS scheduling algorithm using C on linux OS. This is what I need to do Write a program to simulate **FCFS scheduling algorithm** using pipes for inter process communication. 1. Let the parent program be the scheduler. 2. It takes … |
| | int main() { float stud1[2], stud2[2], total1, total2, ave1, ave2; int x; char letter1, letter2,opt; do { system ("cls"); printf ("Enter the test scores for Student 1\n"); printf ("Test 1: "); scanf("%f", &stud1[0]); //Error checking, when the user inputs a value less than 0 or more than 100 if (stud1[0] … |
| | Hi, I need to do this program in my university and I was wondering how can I do it so that when there are no exits available, the program just says "type q to quite", and skips the 'Type the first letter of the next step or direction you want … |
| | What I am supposed to do is create a C program which implements a "dumb" Sliding Window Protocol Implementing Client Server Program. First the client and server establish a connection between themselves and then the client sends "RST" to the server. The server inturn sends its window size (10) to … |
| | Hi All, I have written a program to input a decimal string and convert it to character string. Below is my program: /*this program converts the decimal representation of an input string to character representation*/ #include<math.h> #include<stdio.h> #include<stdlib.h> char int2str(int n); int main() { int dec[100]={0},i,j,decindex,ndec=0,nchar; char character[100]={'\0'}; printf("Enter the … |
| | Does anyone knows how to assigned directly the sqlite query result to a struct in C rather that assigning to its members one by one? I have a table user_info with fields user_id, username, password. Also I have a struct st_user_info. typedef struct st_user_info{ int userId; char* userName; char* password; … |
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