[c] Forum Topics

Alright, the issue I'm having is figuring out whether or not I'm causing memory leaks. I'm considering three situations which might or might not be the same: 1) If I declare a variable in a block of code as a character array, I'm making a pointer to it. But when …

Hello, I am saving my data in a text file. I can successfully access my file and add records in it and even search it. but when it comes to del a record i dont know how to do it. Can some one please advice. Regards, Vishal

Exercise 1: Introduce int variables x and y and int* pointer variables p and q. Set x to 2, y to 8, p to the addre ss of x, and q to the address of y. Then print the following information: (1) The address of x and the value of …

Hello to everyone,I'm using a Borland BCC55 compiler to describe the logarithm function. It works fine,but only with numbers higher than 1,if I insert any floating point the result stucks on -46,whatacer number <1 I write. Here is the function,I made it myself (on a text host): [url]http://freetexthost.com/kv0rdi4gno[/url] Of course …

Hi, I am working on a project, I need to control a CD Drive via the IDE/ATA Interface using a C/C++ program. My goal is to control the Speed of the Drive, and hopefully the radial position of the optical pickup head. I am still fairly new to this field, …

Hi friends i need info and good answer for this question. please help me Q. Reduced Instruction set computers (RISC) provide a large number of general-purpose registers and very few memory access instructions. most instructions use registers instead of memory. what are the advantages of such an architecture. ?? Please …

Hail! Wise and Glorious Gods of C Coding. I have written a little function to search an array and it is cousing the program to hang after I enter the search criteria,It should should the array for a match and then return the whole string it was found in. There …

Hello I want to have a code which gives a random value faster than a value per second. Here is my code: [CODE]#include <stdio.h> #include <stdlib.h> #include <time.h> int main() { int x; srand(time(NULL)); x = rand()%100 +1; printf("%d", x); return 0; } [/CODE] Can you please tell me how …

hello I wanted to know which embedded script: i) Python-on-a-chip ii) AngelScript iii)Pawn allows importing or invoking of C library (user defined) functions. If more than one of these allow, which one is better? Thank you

Please share your idea in Slim + Programs. example. My C program has an output of 2,8,9,1,7,6,5,3 What would be the code for slim + program to generate the same output. Thank you, JamesPH

Helo, I need calculete Spaces in file. Maybe can write this function. Thank you P.S Sory for may english

Hello, I have a question, if you please. I have been trying to fill an array with values from a text file for hours. I has been 12 years since I have used any C code, and I thought I would be able to remember this. I have an opportunity …

Hi all, My code is giving the desired o/p, but at the end its producing segmentation fault. (I know this is very column and also I have checked other posts, but couldn't understand the solution) Here is my code[CODE]#include <stdio.h> #include <stdlib.h> #include <string.h> #include <ctype.h> #include "blake.h" int genShortMsg(int …

void main() { int i=1; printf("%d,%d,%d",i++,i++,i++); } output 3,2,1 CAN SOMEONRE EXPLAIN ME WHY?

how can i get already written code for a particular program?

Hi all, the following code prints garbage values. I want to read from an array two bytes and print then as a short int after doing ntohs. What is the bug in the code? Thanks and Regards, Prashanth [code] #include<stdio.h> struct converter { unsigned short int i; }; main() { …

[code] main() { int i=0xff; printf("\n%d",i<<2); } [/code] please tell me how to work out this code... and what will be the output...

I am tring to pass an array to a function but when i compile it says array undeclared first use in function.i thought once i pass it as parameter it becomes known by the function.here is my code: /* Write a program that reads quizzes from a file 'q.txt', randomly …

I have a question about functions and pointers to functions.... Why does a C program treat a function call to a function and a function call to a function pointer the same? [CODE] #include <stdio.h> #include <stdlib.h> typedef void (*funcptr)(void); void myfunc(void) { fputs("Hello, World!\n", stdout); } int main(int argc, …

hi, I have some problems with winsock library so I am calling loading it dynmically then calling the functions so far so good,but the problem is for example I see in the winsock2 header files that - GetHostByName and some other functions are which I use there prototypes is kinda …

Hello, i need to do a program which takes an input sequence of characters from the alphabet {A,B,C} and compresses it by replacing each subsequence of a particular character by a single occurrence of the character, and the length of the substring. e.g. Input : AAAAABBBBBBBCCBBBAABBCCCCCS Output: A5B7C2B3A2B2C5 i dont …

i need a detail explanation about left shift and right shift operators in c..its very hard to understand it..especially when i am using shifting on hex and oct values...seems to quite confusing me...i got the output..but i dunno how it comes...please clear my doubts.. thank you

My English is very poor...there must be a lot of mistake in my expressions. but It would be very kind if you can answer my question... 3Q. In c compiler ( vs 2010 express c++), I tried the code as follow, 0 error 0 waring. In C++, it is the …

Hi, I want to read ctrl-c ctrl-z values from serial port. is there any ways to read? Regards Yuvaraj

whenever i run this code: [code=c] void _freecommands(void) { command_t *com; for(com = cmd.commands; com->name; com = com->next) free (com); } [/code] i get one, even though i've malloc'd them previously and the conditional statement checks if they're not valid i don't understand why, can someone help me?

I'm reading in a text file that contains a little custom script. However, one line of that script gets ignored and I can't figure out why. Script: [CODE]# Test Case #1 - Simple Movement RESET FORWARD 2 PAUSE 1 REVERSE 2 PAUSE 2 TURNRIGHT 2 PAUSE 1 TURNLEFT 2 PAUSE …

Hello guys, i am making a simple test using select() for a future program i must do. What i'm trying to do is very simple, i have a client, and a server. The client listens to both stdin and sockfd using select. The objective is as follows: If i write …

when i run this code, f is being set to null and i have no idea why.. i know for a fact that cmd.argv(1) at that point is "vars.rc" because i debugged it with breakpoints. [code=c] FILE *f; if(cmd.argc() != 2) { con.printf("writevars: <filename>\n"); return; } f = fopen(cmd.argv(1), "w"); …

Hi, So I'm new to C and I'm trying to get the max temp from my user input and the print out in a table the temperature's from 0 to max temp in celsius and fahrenheit. However I can't seem to get the maxtemp from my getinput function. I was …

what is difference between C And Objective-C? is this the same language? use for build a software? THanks

[code]main() { int i, j; scanf("%d %d"+scanf("%d %d", &i, &j)); printf("%d %d", i, j); }[/code] i have doubt in this program where we are using 2 scanf statment which is nested one...y we are using +scanf..is this corect?? if so please expalin it..

Hi, Everybody, I wrote the program to connect to the Microsoft Sql server 2000. I have also defined constrains and triggers on Tables of SQL. Now I want to catch the error message generated by the triggers or constraints in c prog and want to show it to user. Can …

how I can simplify fraction after do some process on it (add, sub...) this part of program (add fraction) [CODE]int i,j,k,m,a,b,c,d; char x; printf("Please Enter fraction number 1\n"); scanf( "%d%c%d",&a,&x,&b); printf("please Enter fraction number 2\n"); scanf("%d%c%d",&c,&x,&d); if (b == 0 || d == 0){ printf("undife number\n"); system ("pause"); } else …

[CODE]return((int)ADHR << 2);[/CODE] im trying to learn what a certain function does and then i stumble upon this part. i do get that << 2 means shift left by 2. what i do not know is the (int)ADHR part. can anyone help me out with this? thank you

i have a 2D matrix of characters or integer or whatever!How do i check if another matrix is a sub-matrix of The 2D one ...Please!! help with simple code that work for any size of the matrices Thanks in advance to all

I'm supposed to ask the user to enter a number of marks, and to decide what each mark is. Then my program is supposed to find the min and max in the array, so far this is what my code looks like: [CODE]#include <stdio.h> void findMinAndMax(int arrayMarks[], int numOfMarks) { …

Hi everyone, can somebody guide me to produce very small delays for controlling a servo motor using PWM. I need to generate 3 different pulse widths of 1.2ms , 1.5ms and 1.8ms. I am using Keil compiler, and 8051 microcontroller. I am a good C coder, but dont understand much …

i want know the code how i enter password and appear on screen as *****

Hi, Im having trouble dealing with text files in C. I want to be able to move through the text file which Ive used fseek(). But how do I read one character or read a line of characters from the position I want and change these to float? Thanks in …

I want database management in C To ADD,LIST,DELETE,INSERT using structures and files..........not in linked list.............. can anyone help me out....because this is the first time to do long and some what complex program for me

I want to take out words that reoccur in array1 and put them in array3. (so in array 3 there would be only distinct values) the problem is.. i dont understand how the count2 value can reach so high. (over 300) but should be 20 maximum. [code=c] for(i=0; i<count;i++){ if(count2==0){ …

im trying to use c to interface with a zilog microcontroller. the problem is that i cant do much without the library <ez8.h>. ive been searching the web now for any links to download this particular library to no avail. does anyone know where i can get this library? thanks …

[code = c] #include <stdio.h> #include <string.h> int main() { int n = 0x000000FF, i; char *p = (char *)&n; for(i = 0; i < sizeof(int); i++) printf ("value : %d\n", *(int *)(p + i)); return 0; } [/code] I'm expecting something like 255 0 0 0 OR 0 0 …

[CODE]#include <stdlib.h> #include<iostream> #include<conio.h> typedef struct kume1{ int data; struct kume1 *next; }; typedef kume1 *kume1ptr; void insert(kume1ptr *x,int a); void del(kume1ptr *x); int main(){ int t=1; kume1ptr first1=NULL; kume1ptr first2=NULL; int x; int i; for( i=10;i>=1;i--)//ikisi içinde 20 şer tane random sayı üretiyoruz { x=rand() % 100 + 1; …

[CODE]#include<stdio.h> main() { FILE *fp; fp=fopen(*PR1.c","r"); if(fp==NULL) { puts("cannot open"); exit() } }[/CODE] -------------- in this program why they are using *fp and pl reason full program.. and also how fp=fopen(*PR1.c","r"); works

[CODE]FILE *fp fp=fopen ( const char * filename, const char * mode ); //// or //// FILE * fopen ( const char * filename, const char * mode );[/CODE] if i am asked to say "how u say?" in c language like direct command line code or what.. they say...

Hi. I'm having a little trouble figuring this problem out. What I need the program to do is take an email inbox and print out only the Headers for each message. Assuming each max line length to be 1024. I can read the file line by line but I don't …

Hey guys Im having trouble printing out a string. Could someone help me out? I would like to enter a string like: "julie perez" and print out "julie perez" but my program only outputs "julie". The code that prints out only "julie" is the following: practice.c: [CODE] #include <stdio.h> #include …

So what I want the code to do so far is take an expression lets say 35x + 17y = 5 and break it down into three values, 2 integers and a character. 35, 17, and + so I can tell it how to evaluate it. Here is my code …

hey do u know how to create shortcut for a file using c programming.