[c] Forum Topics

Is the sizeof operator in c a compile time or run time operator..Because the following code works fine with a gcc compiler int a; scanf("%d",&a); printf("%d",sizeof(a)); But I found in one of the tutorials thatsizeof is compile time??Can someone please clear the confusion?

I have this file 3 10 10 10 0 0 0 0 0 1 1 0 0 1 1 1 1 0 0 0 1 1 and I want to read the first line as intger in X the 2nd line in camp1 the 3rd line in camp2 line 4 …

this is the question. www.codechef.com/problems/CTEAMS i wrote this code http://ideone.com/h5Gimy it gives success but when i pass an input it gives sigsev error.please someone help!!

Hey everoyne. I'm wondering If it's possible to construct a switch statement which takes in a character and determines weither that character is a number or not, or an alphabetical number. switch(i) /*character*/ { case '0': /*ok it's a number, doesn't have to be zero, any number from 0-9*/ case …

Like I have this eBook called C Programming Language 2nd Edition and It does not tell me where to write the programming codes. Do you have to write It In a notepad?

I am planning to write an application in windows which will temporarily block the configured websites irrespective of what browser I am using. As I am completely a newbie in this I want to know where to start. Please provide me with any useful links which can help me. If …

#include<iostream> #include<vector> #include<stdio.h> #include<string.h> #include<stdlib.h> #include<algorithm> #define READY 1 using namespace std; typedef struct task_node { int task_id; int period; int wcet; int arrival_time; int deadline; int state; int ceu; int slacktime; }task; void read_input(vector<task> &); void print_task_vec(vector<task> &); bool comparebyperiod(const task&,const task&); bool comparebydeadline(const task&,const task&); bool comparebyslacktime(const task&,const …

why it doesnot works for values other than 0 and -1 i mean when i tried to print values of array 'a' after memset() then it shows incorrect values. int a[100]; memset(a,0,sizeof(a)); ///it works memset(a,-1,sizeof(a)); ///it works memset(a,1,sizeof(a)); ///it doesnt

I want do a small project based on c programming. so send me a project names......

#include<stdio.h> void main() {int a[100];int i;int getchar;int sum; for(i=0;i<=100;i++) while {((a[i]=getchar())!=EOF)} i++; printf("your no is =%d",&a[i]); i=0; sum=0; while(i<=100) {sum=sum+((a[i])^3); } i++; if(sum==a[100]) printf("number is armstrong"); else printf("number is normal"); not working,can someone give me an alternative usiing arrays,i got the for loop,want to execute using arrays!

i have a undirected graph and i want to print a cycle with length >=k (given) , can you suggest me a algo ? i dont want any code, snippet. i am hoping for hint and algo for this. thanks. it is guaratned that cycle of length >=k exists.. thanks.

Hi, I came across one question from codechef. [Click Here](http://www.codechef.com/problems/J7) Here, we are given P and S. Let l, b, h be the length, breadth, height of the box. we have these two inequalities 4*(l+b+h) <= P 2*(l*b+b*h+h*l) <= S We have to maximise the volume which is l*b*h. We …

suppose i declare an array of size 10(a[10]) and i try to use even 11th or 12th element...that is i try to put some data...and later extract from a[10] or a[11] ..is it possible..ans with respect to both c and c++..

I have a project and a part of it is related to sha 1 encryption using openMP. Any help would be highly appreciated.

Hello everyone. I made this "text file de/encryption" program as my first big C project. It's working pretty decent, and takes a lot of special characters and tabs without any problems. I have tested the code by encrypting and then decrypting some source code, and compared the output with the …

Hi, I have a piece of code here. #include <stdio.h> int main() { // jimmy and masked_raider are just aliases for the same memory address. They’re pointing to the same place char masked_raider[] = "Alive"; char *jimmy = masked_raider; printf("Masked raider is %s, Jimmy is %s\n", masked_raider, jimmy); masked_raider[0] = …

Hello everyone, my name is Petcheco and I've been coding C and C++ codes for a while. I already came to this website a couple times and I think it's great. It's a pleasure to meet you all and I hope I can assist and be assisted as much as …

Who can help me to solve this problem? The problem is attached to the post.

Okay, so this is only a portion of my code, but what I have to do is have the user enter their weight, and then choose from options like eat cake, pizza, work out, and a few others. If they choose eat easy work out, they enter the number of …

Hey guys, I want to know how to program a search engine that looks for keywords from different websites. I know how to program search engines themselves if you're searching specific items from your website. What I want to know is searching for specific words all over the internet. E.g. …

I need to convert that example table: `unsigned char key[8] = {0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08}` To char text[16]="0102030405060708" I have no idea how to do this in the simpliest way.

I've been told to study up on four c segments: code, data, stack, heap. I know that googleing stack and heap will probably give me a mountain of information. But what the heck is code and data? If I type c code into google I'M going to get a lot …

**guys I wrote this, there's no errors, no warnings... but it keeps crashing on execution.. any ideas ?????** #include <stdio.h> #include <stdlib.h> #include <string.h> struct data { char * name ; int grade ; }; int compare_ints(const void *a, const void *b); int compare_strings(const void *x, const void *y); struct …

How to make a reverse string program in [c programming](http://www.programmingpad.com) language ?

So i have write the following code (above) and now for the second part i am required to apply the Complex Number into finding the voltage across the Resistor in a series RLC circuit. The following tasks : Create an executable program Resonant Circuit, which allows you to output the …

error is coming while linking the file error is undefined symbol _clearviewport in module ... i have used graphics.h library function dos.h and also stdlib.h can any one help me out to identify this problem?

#include<stdio.h> #include<stdlib.h> struct complex { int real,imag; }; int main() { int choice; struct complex x, y, z; { printf("Press 1 to add two complex numbers.\n"); printf("Press 2 to subtract two complex numbers.\n"); printf("Press 3 to multiply two complex numbers.\n"); printf("Press 4 to divide two complex numbers.\n"); printf("Enter your choice\n"); …

So I am writing a cash register program, person buys items and the number calculates. But I am stuck at looping, I want the user to pick to pick all his/her items first then after all the program is done I want the program to ask if the user wants …

Please help me with this I really need your help. Thank you so much. #define EMPTY __________ #define DELETED __________ #define max 1100 #define setSize 20 typedef struct { unsigned long ID; char Lname[16],Fname[24],MI; char course[8],year; }Student; typedef struct { Student Stud; int link /*used to link to next synonyms*/ …

Hi please help me with this. My head really hurts from attempting to answer this question. Thanks a lot! #define maxCells 1000 #define maxCS 11 #define maxIT 19 typedef struct { char LN[16], FN[24], MI; }nametype; typedef struct studtype { unsigned long ID; nametype name; char course[8]; int yr; }student; …

Please, what are the major things to look out for when writing a c-program report?

Hello all, recently got a piece of coursework I completely know nothing of. It is shown below: Your task is to write a file archive utility similar to that of the Unix tar program. This program will be a command line program (i.e. there will be no graphical user interface). …

I'm almost finished coding the last of my C program on stock inventory but in the last two functions (one being my main function and the other a void function) the compiler gives an error stating that there a Parse Issue and that an expected identifier or "(" is missing …

hi friends is there any way to get remainder for **flaoating variables** in C programming??

I'm coding an inventory program in C and I need the variable "stock1" in more than two seperate functions I'm not sure as to how they're supposed to be manipulated and read by the seperate functions nor do I understand how to declare them If I declare them as global …

please help .i have written this programme just to enter data to a linked list.but it isnt working.cant understand where the problem is.how can i make this work and how can i make this programme evev better #include<stdio.h> #include<stdlib.h> #define NULL 0 struct linked{ char data[20]; struct linked *next; //pointer …

These days im using xcode and its a bit of annoyingly good amounts of changes from borland which im used to But i keep getting error for this printf ("\nThe amount of First Class cars Stocks remaining are: %d", &stock1); (while stock1 is declared: int stock1) and it says format …

There is a small problem i have there is a small error that i didnt use to have with the boorland compiler I'm using xcode these days and in my switch case im trying to execute a function (as you can see, the "main" function) however it says that it …

I was wondering if I could write programs for firms. Even for free. (I know PHP/ASP/JS C/C++/C# Java) I learn these at college but i'd like to see how this works in real life :D.

#include <stdio.h> #include <string.h> #include <conio.h> #include<stdlib.h> int fstock1, fstock2, fstock3; int opt1, opt2, cCost, length, gTotal; int stock1= 5; int stock2= 10; int stock3= 15; //--------------------------------------------------------------------------------------------- void welcome() { system ("cls"); printf ("\n ||||''|| . ...\n"); printf (" |||| ||| |||''|| '||| |||. .|| ||| .||''||.\n"); printf (" |||| …

My objective is to have a 2d array [3,4] which takes in 12 values of doubles. I then want the programme to round the values to the nearest whole number and then store these in a new array. When i seem to try this it is just storing the unrounded …

I have no idea hw to approach this... i need to end my program, shown below by the user pressing the letter Q on the keyboard. Help? #include <stdio.h> #include <stdlib.h> float subtract(float x, float y); int main (void) { float x, y; printf("Please enter a real number:\n"); scanf("%f", &x); …

I read the following points related to side effects in gnu c manual it is necessary for the following points to hold true between two sequence points: 1.an object may have its stored value modified at most once by the evaluation of an expression 2.the prior value of the object …

I think that the problem is in lines 59-63 #include <stdio.h> #include "genlib.h" #include "ctype.h" #include "simpio.h" #include "string.h" typedef struct{ char name[30]; long sell; double supply; }domiT; void ypologismoi(domiT stx[],int *p,FILE *infile); void emfaniseis (domiT stx[],int *p,FILE *outfile); main() { int p; FILE *infile,*outfile; domiT stx[100]; ypologismoi(stx,&p,infile); emfaniseis(stx,&p,outfile); system("pause"); …

How to find this series without using power function in c 1+x/1!+x2/2!+x3/3!+x4/4! please help me out i'm unable to solve these type of questions

I have an assignment in which i have to add, subtract, multiply and divide two complex numbers and i am very confused as to how to create the program. This is what i have got so far.. #include <stdio.h> #include <complex.h> int main (void) int real, imag; { complex a, …

There is error in this program it's not showing the correct output so help me out by modifying it. #include <stdio.h> int power(int n1,int n2); int main() { int base, exp; printf("Enter base number: "); scanf("%d",&base); printf("Enter power number(positive integer): "); scanf("%d",&exp); printf("%d^%d = %d", base, exp, power(base, exp)); return …

In the book called gnu c manual I read that the following code has an undefined behavior `i=++i +1`; Because since the variable i is modified more than once between the sequence point,it is not sure that what value will 'i' have..But it is evident that the final value in …

Hey everyone I was working on a small tool and also refreshing my programming skills. my problem is I want to pick a random number from 60,000 to 200,000. it does that but the number it displays are not dramaticly changed. For example if it out puts 062045, i hit …

Dear Internets, I am currently trying to write a program that can extract the "header" from a FASTA file. and then output a portion of the header to a new file. The part of the header i need is the "CONTIG_X" part. When I run this program it prints duplicates …