18,490 Topics
Hi Everyone, I need help with using isdigit in C. What I am trying to do is verify that the user input is numeric. In my program, as is, I get the error: line (21) : error C2061: syntax error : identifier 'isdigit'. If I remove the "if" from in …
hello.. its me again and Im having problems with files again..this time, its with link list.. I can't get my program to display the contents it reads from a file. Please help.. I want to solve this myself but I have no time, my exam will start in 1 hour..:( …
Hello.. im having a problem with my code.. when i save a file, then choose another variable and load the file, then try to display it, all that it display are garbage values.. i know the problem is either in function save_file or function load_file.. can anyone please help me.. …
I'm trying to write my own function from scratch to add large numbers. This function takes the input of an unsigned long long array, with each number being 10 didgets long (the reason for the long long signed is becouse I might expand it) and adds it to the output …
In this c program I have to be able to read from a file that can have up to 40 students. print the high, low, and average of quizzes, and students grade while quiz 1, 2, 3 are 50% and 3, 4 are the other 50%. I'm stuck ...........help please.. …
hello i coding a program that need to sum array according to its num like for example num[0] will only do that and num[1] sum[1]=num[0] +num[1]; sum[2]=num[0] +num[1] +num[2]; etc i got one idea first i will fill the num array with numbers then i go through after that with …
Hi, I'm writing a small application which reads and writes to some files. MY problem is that when I write to the file in my program, I get an error, %eax is set to -14. strerror(-14) returns unknown error, and I was told on irc that posix write() doesn't return …
I've written an Object Cache in PHP. [url]http://code.google.com/p/php-object-cache/[/url] However, it requires PHP Sockets support which is not available on a lot of PHP builds. Coming to the conclusion that all hosting that support PHP should support C, I'm going to rewrite this in C. The PHP source is here: [url]http://code.google.com/p/php-object-cache/source/browse/trunk/socket.class.php[/url] …
Create a text file on desktop as “text.txt”, content of file will be a single line as “FILE ORGANIZATION AND ACCESS METHODS”. Write a program to read from file only “ORGANIZATION” word and print it on screen. And i am doing that but it does not work . [code=c] #include …
[i][color=#33CCFF]/*Help me finished this code.I trying to make a program that will ask 2 choices. 1 is for converting dollars to peso and 2 is for converiting peso to dollars. Im trying my best but i dont seem to get the right code for it. Im just a beginner in …
i cant understand why this happens i m making a simple implentation of sieve of eratosthenes algorithm but code doesnt run on gcc [code] // calculate primes from 1 to 100 #include <stdio.h> #include <math.h> int main() { unsigned long i,x[99],w; for ( i=1; i<100; i++ ) { x[i] = …
Hi Please look at this small piece of code: [code] char* pArray = new someArray[128]; delete pArray; deleta[] pArray; [/code] Will this generate a mem leak? "delete pArray" wil deallocate only the first char of someArray but will "delete[] pArray" deallocate the rest of someArray or will the compiler see …
i know how to find palindrome and also how to find reverse of string using for loop. but i wish to do it within a loop (for) using flag. can u please tell me how to use flag in c . my code is as follows [code] #include<stdio.h> #include<conio.h> #include<string.h> …
Hi all, Can anybody tell me how to calculate the order of a recursive function. Lets take factorial function. Without using recursion [COLOR=blue]int x =1;[/COLOR] [COLOR=blue]for(int i = 1;i<=n;i++)[/COLOR] [COLOR=blue] x = x*i;[/COLOR] In this case the order will the O(n) in terms of time and in terms of space …
Hi guys!! I am wondering how below given program is working. in function func1 how return (void *)y working. [CODE] #include<stdio.h> void * func1() { int y; y = 10; return (void *)y; } int main() { void *x = 0x00; x = func1(); if(x == NULL) { printf("error\n"); } …
Hey guy's. Can't get this seemingly simple function to work. It is suppost to get a string and return the first 10 characters, than the next time you call it, it returns the second 10 cheracters and so on. I did this in basic a while ago without problems, C …
Hello people i got a h.w to do Using nested loops to produce the following pattern: F FE FED FEDC FEDCB FEDCBA I had idea to do it but that will require array and strlen(char first int of the outer loop) and the thing says that I must do it …
can anyone tell me how to achieve this? its the first time i use gmp, i cant really understand what i should use and how lets say we have x1= 5*100; x2=10*10; can anyone show me the code that adds those numbers and prints the result? thanks
Hello everyone. I haven't started to write the program yet but I have the guidelines to make it. They are : Write a function in assembly language called “factorial” with the following prototype: integer factorial(integer n) Pre-Conditions: “n” is an integer (positive or negative) “n” has been passed in as …
I have names of certain students and their ages stored in a text file 'records.txt'. LIKE: John 22 Paul 21 Sam 24 Harry 23 Now i want to store these ages and names in a structure 'records(r)' directly from the file. (Here i am not taking any input from the …
Hey, i'm not too familiar with c and i need to write a hashing program that takes in a int and a a string. I'm trying to use separate chaining. ok here's my hash function, basic one: int hash(int key ) { return key mod TableSIZE } here's my stuct …
hii , i m getting a problem with save file dialog, i m getting this error "c documents and settings localservice desktop refers to a location that is unavailable' whenevr i click on desktop button.
Hi All, I am using Visal Studio 2005. I couldnt understand how Visual Studio is executing follwing code. Can anybody please tel me. I have worked on Turbo C compiler, VC++ compiler and Visual studio. I could understand the output of other two compilers for the following code. But i …
Hi I'm working with a structure like this: [code=c] struct table{ int id, rank, hop_sup; float dist,bs_dist, res_enrg, total; }; struct nd{ float x,y, enrg, bsdist; int id,my_rank, hop; int neighbor[50], prfrdnbor; float nbordist[50]; struct table nbr[25]; }node[127]; [/code] Do you think this would cause memory problem? In my program, …
Hello all, I am new and I was hoping someone could please help me out. My problem is, I am trying to design a C program to read in a text file containing values, and output these values in binary form. the text file "values.txt" looks like this: 139 <tab> …
Writting a program which involves tallying generated numbers. I'm having problems with the tallying part. It takes a number, and finds it in the second row of an array, and tallies (add 1) to the same position in the first row. Here's my extracted code: [CODE=C]#include <stdio.h> void tally(int number, …
In a book, I saw a definition like this: [CODE]static struct map_info mymap = { .name = “mymap”, .phys = FLASH_START_ADDR, .size = FLASH_LENGHT, .bankwidth = FLASH_WIDTH, };[/CODE] what does it mean..?It's not clear for me actually..
I'm making a module to simulate a neural network, speed is an issue so I've written it in c, basically you build the network in python, and then run call a simulate method that is pure c. One thing I want to add is the ability to inject current into …
Looking at using resource files. using Watcom c. Using the Watcom resource editor I output *.res and *.DLG files Any hints on how I produce a *.rc file?
I need to create a program that adds two sets, hint: the set is composed of distinct (integer) How to do this using this Function: void add(int result[],int item,int *count); add result the value of the item. Please i really need ur immediate help...pls600x
hello people, I have a problem in sorting linked list according to id number of student in secondary school system ,the code is not working .can any body help me please ?!! Here Is my code. [CODE] void sortbyID() { struct school *pre; struct school *move; move=head; pre=move; move=move->next; while …
Build a program in C that accomplishes the following task: It reads from a file the names of some certain files and their size in MB, then it distributes these files to some folders each with a maximum of N MB. The way of distribution is such that a minimum …
hello. In my project the students are added into two levels(1 & 2) each level has it's own linked list so if you choose to add a student in level 1 it will be added to list1, if you choose to add him in level 2 it will be added …
hi, I m making a graph with all (x,y) printed on graph line..like from +x=1,2,3....so on and same with -x,+y,-y. below I tried u can try this too but I want clean graph with nos. on it. can someone solve it? [code]#include <graphics.h> #include <stdlib.h> #include <stdio.h> #include <conio.h> int …
HI everyone. :) .I hope you can help me my function . I want the user to enter number of level "There are two levels" and then display students records in that level sorted by id .the one I wrote sorts then displays so the output is wrong .I tried …
hello every body i have a problem with a c program . the question that ( [COLOR="Green"]write a c program that reads a real numbers untill error then calculate the sum and the average of all numbers [/COLOR]) i have solve it with a while looping . and i need …
[code=c] #include<stdio.h> // Global variable declaration and initialization. can be used every where in the program body. static char grid[3][3] ={{' ',' ',' '}, {' ',' ',' '}, {' ',' ',' '} }; void Print()//--- to print the grid. prints the grid. { int i, j; printf("\t-------------\n"); for(i = 0; …
I need help with the following program I wrote. Im getting a segmentation fault and the warning "assignment makes integer from pointer without cast". Can anyone spot any errors with the program? [CODE] #include <stdio.h> #include <string.h> #define MAXLENGTH 256 //function portotype char * next_word(char *instring, char **new_start); int main …
[COLOR="Green"]Hello all! I'm so excited that I stumbled across this community, as it seems very friendly and helpful. I'm a beginner to programming (currently taking Programming I in college) and right now all I know is C. Unfortunately I don't even know much of that yet :P But we've all …
I am an average American working daily, I work at an Land Development Engineering Firm. I am currently married two kids and a wife, of course. I am currently attending College at Colorado Technical University going for a Bachelor's in Software Engineering. I am currently attempting to self teach myself …
hi guys, i have this code [code] #include <stdio.h> #include <stdlib.h> int main(){ unsigned long long *x; x = (unsigned long long*)malloc(600851475143ULL*sizeof(unsigned long long)); if (x!=NULL){ printf("success\n"); getchar(); } else { printf("fail\n"); getchar(); } printf("%I64u\n",600851475143ULL); getchar(); return 0; } [/code] this is a part of some program im trying to …
Warning, this post contains code for Euler problem 5. Try to solve it youself without looking at anyones code. Its alot more satisfying if you do it yourself. Hello, just found an interesting website called project euler. I managed to get to problem 5 without a too many problems. Anyways …
Iam doing my comp engg in india...we arent taught C in extreme detail in our univ...is it crucial or wil it make things very simple for me in the future if i make sure i get a high level training in C at this initial stage?
hi, I need help in my work. Let me give some idea of what I am trying to do. I have multithreaded C program, where I am suppose to take inputs from different files (a input file for each thread). Threads will execute based on these inputs. I am struggling …
I need to use huge data (10^100) in a Variable in C? How can i implement it? Double,float ranges are low.. Suggest me in this.. Thanks in advance!!
hello everybody,I'm a new member ,and i was hoping that you could help me with my problem . I'm making a secondary school system using linkedlist and files and i add students into two levels each one with a different linkedlist. we are suppose to add ,update,delete,search,display and then save …
Hi, I need help on this asap please.. I need a program to build a console application to sort a list of names entered in an array in alphabetical order WITHOUT using array.Sort() Method.... please this is not an assaignment ,i have tried a lot but couldnot figure out plzz …
[code] # include <stdio.h> # include <conio.h> #define squ(x) x*x main( ) { float s=10,u=30,t=2,a; a=2*(s-u*t)/squ(t); printf(“result :%f”,a); } [/code] [B]output is -100.000 how is it possible[/B]??
I'm trying to make a simple prime number generator for bigger program. It needs two numbers (n and c) and needs to edit them. So I decided to put the numbers in pointers, and just give the adress two the pointers. After about a half-houre of fumbling with *'s and …
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