file-read

There are a bunch of ways describing how to use various methods to print out lines of a text file on this site: Posix-style , reading IP addresses , Fixed line length . They all seem to be tailored to a specific example. It would be great to have the Clearest and Most Concise and Easiest way to simply: print each line of any text file to the screen. Preferably with detailed explanations of what each line does. Points for brevity and clarity. #include <stdio.h> static void cat(FILE *fp) { char buffer[4096]; size_t nbytes; while ((nbytes = fread(buffer, sizeof(char), sizeof(buffer), fp)) != 0)

This is my first ever question here and I'm new to R, trying to figure out my first step in how to do data processing, please keep it easy : ) I'm wondering what would be the best function and a useful data structure in R to load unstructured text data for further processing. For example, let's say I have a book stored as a text file, with no new line characters in it. Is it a good idea to use read.delim() and store the data in a list? Or is a character vector better, and how would I define it? Thank you in advance. PN P.S. If I use "." as my delimeter, it would treat things like "Mr." as a

I am making a Mac OS X App (sandboxed) which reads from an installed config file in /etc/myfolder. When I am trying to read the file using NSFileHandle, I am getting the following error in Console: sandboxd: ([3251]) MyApp(3251) deny file-read-data /private/etc/myfolder/myconfig.conf I have set the following entitlements in my Entitilements file, but I still get denied by sandboxd. com.apple.security.temporary-exception.files.home-relative-path.read-only com.apple.security.temporary-exception.files.absolute-path.read-only com.apple.security.files.user-selected.read-only EDIT: It seems that I

i am trying to read a file in c. i have a .txt file and it has that content: file_one.txt file_two.txt file_three.txt file_four.txt when i try to read this file with fopen i get this output: file_one.txt file_two.txt file_three.txt file_four.txt\377 what does \377 mean? Here's my code. #include <stdio.h> #include <stdlib.h> int main(int argc, const char * argv[]){ FILE *filelist; char ch; filelist=fopen("file-path", "rt"); while (!feof(filelist)) { ch = getc(filelist); printf("%c",ch); } fclose(filelist); return 0; } The getc() function returns a result of type int , not of type char . Your

I am new to Java programming, I am trying to print names, read multiple text files from a folder and counting the word frequency of each word file, when i am reading a folder all the text files are printed but they are not read, please look at the code. import java.io.*; import java.util.StringTokenizer; import java.util.TreeMap; public class foldersearch { public static void main(String[] args) { // Directory path here String path = "/home/sumeet/Documents/text files"; String files; File folder = new File(path); File[] listOfFiles = folder.listFiles(); for (int i = 0; i < listOfFiles.length;

Lets say I have a text file called: data.txt (contains 2000 lines) How do I read given specific line from: 500-1500 and then 1500-2000 and display the output of specific line? this code will read whole files (2000 line) public static String getContents(File aFile) { StringBuffer contents = new StringBuffer(); try { BufferedReader input = new BufferedReader(new FileReader(aFile)); try { String line = null; while (( line = input.readLine()) != null){ contents.append(line); contents.append(System.getProperty("line.separator")); } } finally { input.close(); } } catch (IOException ex){ ex

I am new at R programming and I want to read a text file in R. One of the columns, lets say column 7 is numeric and each number represent an ID I want R to read the numbers as if they were strings. And count the number of times each ID appear in the file (such that later I can assign the frequency of each ID to the given ID for latter use) I have tried mydata<-(read.table(filename.txt)) ID=mydata[7] freq=table(ID) This works but it takes the IDs as numbers. Now I have tried freq=table(as.character(ID)) But then it takes the whole column ID as only one string and from summary(freq) I get Number

I am reading from file of format 1 32 43 23 32 43 123 43 54 243 123 2222 2 Here is my code snippet. string[100]; while(!feof(fp)) fgets(string,100,fp) Now, when I put every string, in the last string I am getting repetition and some more ambiguities (like something else also gets printed say 123 or so). How to solve this problem? dasblinkenlight You need to check the return value of fgets . If a read has been successful, fgets returns the pointer to the buffer that you passed to it (i.e. string in your example). If the End-of-File is encountered and no characters have been read, fgets returns