19,876 Topics
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| | Hi , i know one method of deleting a record from a binary file. that is : read the contents of the file and every time check for some criteria based on which we want to delete the record. if record does not match criteria then write to new file … |
| | i have a project anc i need to do an interface to my c program , there is any functions to do it? |
| | I have a code like [code] int a=10; a=(++a)+(a++)+(a++)+(a--)+(--a); printf("%d",a); [/code] this gives the output as 51. while [code] printf("%d",(++a)+(a++)+(a++)+(a--)+(--a)); [/code] gives 56 as ouput. can you please explain the flow in both the statements. |
| | Hi everyone, I am having some trouble here... I am asking the user to enter a file, and that file will read the contents and determine if the student will pass or fail the class. That part I am having trouble with is when I have to decide if the … |
| | hey everyone, im tryin to generate random strings and store them in an array. can anyone please show me?  |
| | Hey folks, I am trying to normalize a view on a given output. This is how it works, I need to print several characters but the maximum chars i can print have to be 40 per line. [QUOTE]aaaaaaaaaaaaaaaaaaaaaaaaaaaaa...till 40 aaaaaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbb[/QUOTE] The algorithm works as follows: I have to find … |
| | I have an array codes[26] which contains numbers inside {25,4646,23,12,.....29} Each position in the array corresponds to a letter of the alphabet. code[0] is a, code[1] is b, etc... I'd like to print the occurrences of each letter, something like this. If there are 12 A's, 5 B's AAAAAAAAAAAAA BBBBB … |
| | I'm trying to run this code in cygwin 1.7 but i get segmentation fault when I choose to search. I tried this in cygwin 1.5 before but it works. does anybody know the reason why it won't work in cygwin 1.7? here's the code [CODE] /**************** Rachel Perono running BST …  |
| | Hey everyone, I have a series of loops that read through a text file and then output the occurrences for each letter on the file. This seems to be fine when using small text only. When providing a lot of text it just takes too many CPU resources and that's … |
| | [CODE]/* This function accepts a socket FD and a ptr to a destination * buffer. It will receive from the socket until the EOL byte * sequence in seen. The EOL bytes are read from the socket, but * the destination buffer is terminated before these bytes. * Returns the … |
| | Hi, Is it possible to read a file only to get the first 100 bytes from the begining and the last 100 bytes at the end? I have to get info from files that are in the first 100 bytes and in the last 100 bytes of the file and … |
| | Hi, I'm a student learning to code in C. This is what I have only when I compile it, gcc, I get two error messages and I don't understnd why. The messages are '67: error: expected declaration or statement at end of input' and '67: error: control reaaches end of …  |
| | Hi folks, I've been trying to solve this but I keep hitting a brick wall. Here's what I am trying to do: I'm reading a file with text in it, I am storing every letter of this file as an element of this array (this part is already done) and … |
| | Hi, I am total new in C. I have an array, then i loop it to get array elements. How can i add this array element into existing array? thank! [CODE] char arr[] = {1}; for (int i = 0; i < sizeof(arr)/sizeof(arr[0]); i++ ) { something happend here = … |
| | Hello everybody! I have a little problem in a piece of code that seems quite simple. This piece of code reads float numbers till the user hits the number -999.9. When he/she does then the program ends. So i write [code=c]float n; scanf("%d", &n); while (n != -999.9) { i++; … |
| | I triying to write a program with array and functions. But it's realy hard to solve it with my restricted knowledge. Help me please. The problem is: Write a program where a user can insert integers to an array, find an integer (i.e. find the index of an integer previously … |
| | hello all i have a problem with a "while condition" useing c. my assignment was to create a dynamical array, using malloc. i did that and all worked as it should. the only thing i dont like,is when it asks you if you want to continue, putting in integer. you … |
| | hello i have a problem...i want to insert a pic to my c program. is it possible to import a pic in c? if it is, how can we do it? |
 | OK my programming/accountant friends, this is very long but I need your help again with an ad-hoc report! I am having a hard time getting my brain around solving this part of an application I am programming and was hoping to get your point of view. Maybe I'm going about … |
| | Hey guys, What I'm trying to do is a function that gets a certain array of structures and print some of the information on the screen, like the name and id_number. The thing is that some fields in the structure are repeated and my goal is to show only one … |
| | I have recursive function,that i need to convert into iterative version... but can't understand how to do it - 2 hours at least :( [CODE=c] double sequence(int n) { double sum,i; if(n <= 30) return 2*n; else { for(sum =0,i = 1;i <= 30;i++) sum+= sequence(n-i); return sum/30; } }[/CODE] |
| | i got an assigment, for tomorow, i have a text file, and i need to convert it to binary file. text file for example: 2 - how many products ipod 1000 2 - product name, price stock playStation 23 9 i need to preper this binary file: first the size, … |
| | Alright, so everything works, except there are a couple minor bugs. Also, is there a more efficient way in doing my listen method? Thanks. Bugs: -First client does not recv the information it sent, until the 2nd client connects. (the server sends it back) -Everyother click recv's everything twice. Server.cpp … |
| | /* In this program i am trying to Read these info from a text file called unsorted saved in D These info are A201456 23.15 B209356 6.58 C201232 7.5 D201172 1.2 E201653 3.68 1)i want to sort them in ascending order of the real number example (23.15 ). 2)I want … |
| | How do I read data from a text file without using fscanf? |
| | Hello, i have to create a program for- If the age is less than 18-You are still a kid 18-30 adult 30-60 middle age greater than 60-senior citizen else for any other impossible age (-ve or 0 age) ' wow ' Here is my attempt, [CODE]#include <stdio.h> #include <conio.h> void … |
| | Hi, I want to solve a problem( to be honest its my homework ) given two string, the print the permutation in ordered form. Example: ‫‪Please enter the first string:> abc‬‬ ‫‪Please enter the second string:> mn‬‬ ‫‪Results will be: abcmn abmnc amnbc mnabc mabcn manbc mabnc ambnc ambcn abmcn‬‬ … |
| | I wrote a program that takes in this kind of input: [CODE]Short, Sue, , 3.11 Cisneros, Juan, G, 3.67 Andrew, T, 5.67 Superlonglastnamethatdoesnotfit, Betty, Boop, 2 Black, Shirley, T, 4.00[/CODE] and my program outputs this: [CODE]Highest gpa: 4.00 Average gpa: 3.19 Lowest gpa: 2.00 Sue Short 3.11 Juan G. Cisneros …  |
| | I have a text file with 500000 records , each record contain student ID and another index number. i insert this recors with separate function ,and i want when the user enter the student id the program get the corsponding index number and put it in avariable and use it … |
| | hi, this is something i keep running into. for example, in the following example of strtok, i'm splitting a given string on a space(" ") delimiter: [code] #include<stdio.h> #include<string.h> int main() { char str[]="1234563 34 7898"; char delim[]=" "; char* result=NULL; char new[15][3]; int i=0; int j=0; bzero(new, sizeof new); … |
| | I'm writing this program where I have to dynamically allocate memory. So I created a function that mallocs space and does a few other things. When I try to manipulate later outside the function, I get a segfault. How do I make sure that space that I malloc inside of …  |
| | can anybody help me transcribe this into vb.net [code] public string WriteNReadBuffer(byte [] TelnetNegotiation, NetworkStream stream) { stream.Write(TelnetNegotiation, 0, TelnetNegotiation.Length); Byte[] data = new Byte[256]; Int32 bytes = stream.Read(data, 0, data.Length); string returnval; returnval = BitConverter.ToString(data, 0, bytes) + "\r\n"; //textBox2.AppendText(BitConverter.ToString(data, 0, bytes) + "\r\n"); return returnval; } public void … |
| | Hello Daniweb, Could anyone please point me to an example implementation of a dynamic memory allocator that uses Segregated Fits with allocations from the front and insertions at the end? I've been trying to figure out a way to implement one, but I just don't know where to start. |
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| | Hi, So essentially I want to read every string in a file, then read every character in that string, find out if the string has two periods somewhere in it, and then save that string somewhere. Can someone get me started in the right direction? |
| | Hi all, Im creating a virtual collections program at the moment, and have added a 'contextual information' panel which fades in on a button click, and then fades out when clicked a second time. Simple enough. Here's the code: [CODE] GLfloat alpha; BOOL Press[256]; GLuint GUIselect; BOOL objectInfo; BOOL scene; … |
| | Hi friends, I am new to c++, just find this example from the book, but when i try to run in my visual studio,its gives problem. there is no error in the codes, it compile well, and in main screen ask the user to input the selection that they want, … |
| | hi i would like u to tell me if i can make a random function to choose between four numbers and only them(-1 , 1 , -10 ,10) |
| | Hi everyone, I'm trying to accomplish the following; I need to create 2 subprocesses and each subprocess should create a process of their own. Should look like this: [QUOTE]I'm child xxxx parent xxxx I'm the subchild xxxx parent xxxx I'm the second child xxxx parent xxxx I'm the second subchild … |
| | Hello, Please disregard any small syntax errors I have made in this question, I’m trying to simplify a program that is many pages long. I have a program that has 2 parts, main.cpp and a form GUI.h. Both have functions that pass variables between themselves and I don't want to … |
| | Greetings, I have a array filled up with random value's (being positive and negative). What i wanne do is have a recursive version that counts -only- counts the postive values in that array. Recu version that counts all the elements (that works but is not quite yet what i seek) …  |
| | Write a C program to find and print the product of factorial of numbers from N to M. Can anyone please give me an idea, how to solve this Question ? Thank you. |
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| | Hi, i am trying to read the contents of a text file containing a single line into a string. i'm doing this in a while loop. the text file gets updated in each run of the loop and therefore the string should contain a new value in each run. but … |
| | Hey everyone, I'm trying to get this code to work... [CODE]#include <stdlib.h> #include <stdio.h> #include <stdbool.h> int allPrimes(int n) { int kiloN = n*1000; int count = 0; int i; for(i = 2; i <= kiloN; i++) { boolean hasfactor = false; int j = 2; while(j<i and !hasfactor) { … |
| | Ok, guys I know that I'm asking too much questions, it's just that I really want to understand how things work. So I have a little project: Make a program in C which runs three processes (A,B,C), which use a common memory (buffer). Process A generates 50 random numbers and … |
| | I was debugging a program and following is the snapshot: [CODE]81 while (j < len_y && suf_arr[j].word[0] == c) (gdb) 184 if (suf_arr[j].len > 1) (gdb) n 186 memcpy(temp_str, suf_arr[j].word+1, suf_arr[j].len-1); (gdb) n 187 ind = search(suf_arr, temp_str, len_y); (gdb) print suf_arr[j].word $13 = 0x7fffffff96d2 "bbit" (gdb) print suf_arr[j].word+1 $14 … |
| | Hello all I've got a question. I have a datagridview control with autocomplete features with it. And was wondering if it would be possible to add 'Tooltips' to the suggested entry. What I'm trying to accomplish is what Visual Studio has done with their intellisense/auto complete feature. For example when … |
| | [code]#include<stdio.h> #include<stdlib.h> main(){ char *tab; int n; int i; char c; printf("dimension du tableau?"); scanf("%d",&n); tab=(char*)malloc(n*sizeof(char)); printf("remplir le tableau :"); fflush(stdin); gets(tab); for(i=0;tab[i]!='\0';i++){ printf("%c",tab[i]); } }[/code] let's say i just want 5 letters in tab,so i run the program and put n=5,but what i don't get is that if i … |
| | [code]#include<stdio.h> #include<stdlib.h> #include<string.h> struct name { int a; char b[10]; char c; }; int main() { struct name *p; p = (struct name *)malloc(3 * sizeof(struct name)); char *n; n = "12345"; n = (char *)p; n = (int*)n; /*this is not correct . in doubt....change correctly*/ strcpy(n+(sizeof(p->a)),"ALL"); *(n+sizeof(p->a)+sizeof(p->b)) = … |
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