[c] Forum Topics

plz help me in this code . its not giving the output plz correct my code [CODE]#include <stdio.h> int main() { double fahr , celsius; printf("Enter the temperature in degrees fahrenheit:"); scanf("%d",fahr); //convert to celsius celsius = (5.0 / 9.0) * (fahr - 32.0); printf("%if temperature in celsius",celsius); return 0; …

I see this in KR C programming language. I really did not understand what it means. If it is line number of current source then we could use __LINE__. But what is the use of #line actually?

Solve i%=(j-2), where i=31 j=9?

I'm going through my professors notes right now and he says in big bold print "Length does not include terminating null". I've looked at 2 different versions of this and in both cases it counts the terminating null. Can someone explain why this is happening. Case 1 [CODE]#include <stdio.h> #include …

[CODE]#include <stdio.h> #include <conio.h> #include <stdlib.h> #include <string.h> #define TRUE 1 #define FALSE 0 void new_item(); void list_item(); void search_item(); void buy_item(); void list_buy_item(); struct item { float price; char item_name[20]; int n_item; struct item *ptrnext; }; struct item*headptr, *newptr, *currentptr,*previousptr,*headptr2, *newptr2, *currentptr2,*previousptr2; void main() { char ch; int choice=TRUE; …

Hi, i have to write a program: user inputs a string of characters (letter, digits spaces etc any possible charachter) and then the program should calculate how many letter, digits, spaces, and other characters are there. I did this question using just a char array and then for loop with …

Hey, How can I terminate a server after some number of connections (don't want it to keep on running forever). I've written in it C, using the select system call, and an array to store the connections made in.. [CODE] while (1) { FD_ZERO(&rdset); FD_SET(clients[fd], &rdset); ( select(max+1, &rdset, NULL, …

Can someone please explain why this function will not compile. [CODE]#include <stdio.h> #include <string.h> #include <ctype.h> // This function determines if a string is a palindrome. /* This function reverses the characters in the string * passed by the caller. */ void is_palindrome (char* string) { int i; int length …

I noticed typing in shell like man printf shows a man page entry. Usually there are man pages for each command. I mean man pages are supposed to be for APIs and external interfaces (like g++, etc). How did the internals of say the c standard library functions end up …

I am hoping someone here can help me with a little bit of trouble using the execve() call. I have some code that needs to call an external script under CNL (Compute Node Linux, [I]i.e.[/I] - Cray XT4/XT5). CNL is [B]extremely[/B] lean and is missing enough libraries to make using …

[code] void main() { int a = 5 , b =6, c=0; c = a++ + b++ + ++b + ++ a + a++; printf("c = %d \n", c); getch(); } [/code] the result of the code is c = 32 while if we write the following code the result …

hiii....i done some graphics programming on a turbo c compiler & i would like to link it to a front end...& may be even develop a gui out of it....please tell me the procedure to link a turbo c code to a front end

I need the coding for the following question in C: Read from a file (.txt file) and count the number of times the word "a", "is", "the", "and", "that", and "this" occurs.

Hi all, I am tryin to differentate an equation and solve using C or C++. I need a start, n i m not getting much information from web even..I am curous hw MATLAB does that...i m positive that LAPACK has a no subroutine for differentiation. Appriciate your response Thank you

Here is a nice little swap function with a good explanation about what is going on. [url]http://computer.howstuffworks.com/c26.htm[/url]

hi its vijay here. i have a problem asked in interview on bit wise operator. question: take a input int var=0xaabbccdd; write a program to reverse it so the out put will be var=0xddccbbaa; please reply me as soon as possible. regards viajy sheoran

Whats the difference between strlwr() and tolower()?

I have no idea where to begin. 1. Write a collection of fuinctions to do arithmetic with rational numbers(common fractions). Define functions getRational, displayRational, addRational, and subtractRational whose prototypes are: void getRational (int& numer, int& denom); void displayRational (int numer, int denom); void addRational (int& ansNum, int& ansDenom, int num1, …

I wrote a function to read an expression (i.e. A+B-C) from the keyboard one character at a time, and ignoring spaces insert each char into a queue. I tried something I though would be fairly elegant, but I don't think I did it right. This is my function: [code] void …

I need the coding for the following question in C: Read and print all the consonants from a file (no duplicates). Assume the file is a .txt file. The consonants are then to be sorted in alphabetical order.

This displayBits function works fine in this code in displaying the bits of the input integer. I put the same thing into function reverseBits and have been trying different things to get it to reverse the order, but can't seem to get it right. I think it's a minor modification …

[CODE]#include<stdio.h> int lcm(int a,int b); int main() { int a; int b; printf("Enter two numbers to find lcm of ? :-\n1. "); scanf("%d",&a); printf("2. "); scanf("%d",&b); printf("%d is the lcm of %d and %d\n\n",lcm(a,b),a,b); getchar(); return(0); } /******************* FUNCTION *****************************/ int lcm(int a,int b) { int i,g,pr,z,q,dummy,lc = 0; /************************************************************************/ …

I am getting many many warnings of this kind in my code. It comes every time I typecast something in my code, which I am doing to variable addresses in order to use integer arithmetic on them. How do I fix these warnings? Thank you! I would appreciate any constructive …

I'm using Dev-C++ 4.9.9.2 Im making my arrays dynamically and I am calling on a function to allocate the memory for me, but I received the warning: "[Warning] assignment makes pointer from integer without a cast " This occurs in main when [B][COLOR="Red"]alocate [/COLOR][/B]is called Main funtion: [code=C] int main() …

How do u scan a floating number from a file?

I'm doing school assignment. But I can't solve it yet. Will you help me? Using shared memory,I have to copy structure to second program. But it does not operate well. Maybe it's type problem especially shmat part. Will you help me guys? Thanks you in advance. [CODE]struct work_list { int …

I am experiencing a rare problem. I wrote a program in C that creates several windows and I use them to load and display images. After using the program for a while loading and displaying images then all of a sudden all the windows on the desktop disappear including the …

i m new in c language. i write the following code. its not giving the correct input. when i enter the marks it always give ouput "F" .please correct the code [CODE]#include <stdio.h> void main() { int marks; float percentage; printf("enter marks:"); scanf("%d",&marks); percentage=(marks/1100)*100; if (percentage>80) printf(" A+ "); if(percentage …

I have created a graph(map) using graphics.h in C. Just to mentioned I have coordinate location of each and every point on the map. How can I zoom in to the particular area selected by the user ? Secondly, how can I zoom in around a particular point(selected by the …

Hi all. First post on the forum. I'm writing a generic funtion to open files along my program, but am worried if the pointers are being closed correctly. The function definition: [code=c] FILE* openfile(char *FileName, char *Mode) { FILE *TempFile; if((TempFile = fopen(FileName, Modo)) == NULL) { fprintf(stderr, "Couldn't open …

Write a function that reads an integer n and several lines of text (sentences between 150 – 200 characters). The text will be printed n characters per line, by adding extra spaces as evenly as possible. For example: Enter an integer (maximal number of chars per line): 10 Enter some …

Well, here i am one more time. In previos post I asked here about read files. All of those problem were fixed, but now, i really have a problem that I don't know why is happing. In the first , i need to explain what my system will do: My …

ok so i am making a program that has a master slave process. the master sends out the 2-d array which is 1000 by 1000 to the slaves. then the slaves calculate the sums of the rows sends back to the master who sums it all up. then the time …

I have this C program with multiple files and I want to introduce a new file called enemy.c. and I'm wondering if I'm going about this right. game.h [code] #ifndef GAME_ #define GAME_ extern void game (void); extern void enemyFunc (void); extern int enemyPosX; #endif [/code] main.c [code]int main (void) …

hi there i have an assignment about writing Cshell with some features i m not gonna ask plz gimme the codes or smth. but i need some advice how to start writing it, what to do maybe smn can show me ways to do it , thanks for help here …

Hi I am making an mp3 database at the moment and i have run into some difficulty when passing down the array to a function. I can do it when i create the array globally as obviously this means i dont have to pass it down, but i want to …

Hi, I'm trying to create a simple distributed system model in C where a central controller regulates the communication between several machines. The controller's job is firstly spawning client process in several hosts. In my understanding to do this you needs to have a connection with the target host but …

Can anyone shoe me an example code to encode an entered password in C. for example: password=vista when displayed to the user on screen when entering the password it should look like this ***** Can someone show me how this can be done, thanks

Hi guy, i have this little program: [CODE] #include <stdio.h> #include <stdlib.h> #include <time.h> #include <string.h> #include <unistd.h> //Obtem o nome do buffer de trade baseado na hora char *btfile() { char *fname; fname = malloc(14); time_t t = time(NULL); struct tm *lt; lt = localtime(&t); strftime(fname, 14, "%m%d%H%M.tbf", lt); …

Hi Everyone, I'm really fed up of working on C in Windows Vista. First and foremost, the window of C occupies only half the screen which is very annoying. I've heard that there is a distinct C that is used with Vista but I have failed to attain any more …

Can someone please tell me what im doing wrong in this program..im gettin a compiler error saying: C:\Dev-Cpp\projects\proto.cpp In function `int main(int, char**)': 46 C:\Dev-Cpp\projects\proto.cpp a function-definition is not allowed here before '{' token 46 C:\Dev-Cpp\projects\proto.cpp expected `,' or `;' before '{' token C:\Dev-Cpp\projects\Makefile.win [Build Error] [proto.o] Error 1 The …

We have an assignment to convert infix to postfix. And I have made this initial code. When this program is executed, I'd type any word that is not an operator or '(' or ')'. For example my input is "asd" my output should be "asd" also. But in this code …

hi every body....... here i want to ask something about base64 algorithm which is used for the encryption of passwords.........i just want to know that how it works ?????what are the functions used in this algorithm?????any type help.....any link...????

hey guys... Thanks for your help in my previous post. Havin another problem in my stack assignment this time.. Have done how much i could but there is a lil error in it.. Possible in the [B]convertip[/B] function... Hope i can get the help needed.. Thanks in advance...=) [CODE]#include <stdio.h> …

Hi there, Could someone give me a simple of example of how to write code in a c++ class library file? I made this to include through a reference in a c# app file. This is what Ive tried but Ive gotten all sorts of build errors: [CODE]// CClass.h #pragma …

I've been trying to read all I can about the %n conversion specifier, but I'm having trouble with it. In the following code, I generate ten random numbers between 1 - 1000 and save each to an element of the array. I need to use %n to keep a running …

[CODE]#include<stdio.h> #include<conio.h> void** printA( int* , int ,int[][]); void printw(void*, int ,int); void main() { int num[3][5] = { {1, 2,3,4,5}, {6,7,8,9,10}, {11,12,13,14,15}, }; int* num_ptr[3]; void** ptr; printf("traversing by double pointer"); ptr=printA(*num_ptr,3, num); printw(* ptr, 3, 5); } void** printA(int* num_ptr[],int r,int num) { int i,j; for(i=0;i<r;i++) { *num_ptr[i]=num[i][0]; …

Hi! I need help to my Turbo C program.. I need to create a program that will ask the "Starting X:", "Starting Y:", Ending X:", and Ending Y:" on different shapes.. this is how the program should be: [CODE]SQUARE: starting X: starting Y: ending X: ending Y: CIRCLE: Starting X: …

Hi, i have this letters, A,R,V,G,M,N,B. And from those i need to get 4 of them randomly, bit i dont know how to do it, please help! :D

hi guys, i'm frustrated at my piece of code for a heap sort function. i believe everything is correct but i am a hardcore beginner at c. i have made a rand.txt file with some floats in it in the form; 91.175598 68.562500 96.664803 29.593500 43.156502 34.241001 59.178200 85.542702 81.852798 …