fopen

问题 I've got c++ code in which I try to get a file from a directory on an android device. I've tried different ways to set the path which I pass to the fopen() function like: /Android/data/com.myapp/files/Blip.wav There actually is this file. But I guess that this is not a proper way to write a path. (The example was obtained by the java code ) getContext().getApplicationContext().getFilesDir().getPath() + "/Blip.wav" 回答1: There actually is this file Since I have never seen an Android device with

问题 I'm using the following code to extract a struct member from a binary file. I'm wondering why this prints out multiple times? when there is only one ID record, and only one struct in the file. I need to access just this member, what is the best way to do it? I don't really understand what the while loop is doing? Is it testing for whether the file is open and returning 1 until that point? Why use fread inside the while loop? Does the fread need to be set to the specific size of the struct

问题 I am trying to fetch search results from pubmed. $query=(BRCA1[tiab]) OR (Breast cancer 1 gene[tiab])AND (Cancer[tiab]) $esearch = 'http://eutils.ncbi.nlm.nih.gov/entrez/eutils/esearch.fcgi?db=pubmed&term=$query&retmax=10&usehistory=y'; $handle = fopen($esearch, "r"); $rettype = "abstract"; //retreives abstract of the record, rather than full record $retmode = "xml"; I get this HTTP Access Failure error. Error: Warning: fopen(http://eutils.ncbi.nlm.nih.gov/entrez/eutils/esearch.fcgi?db=pubmed

问题 I'm making a script to open remote file (ftp) and edit it with fopen and fwrite.I have problem while connecting to ftp.I made this code $handle = fopen("ftp://".$ftp['username'].":".$ftp['password']."@".$ftp['server']."/cstrike/addons/amxmodx/configs/users.ini", "w") or die("ftp error"); fwrite($handle,$text."\n") or die('err2.'); al variables are set.I tried with ftp://... in web page and it works.allow_url_fopen is On... It just says "ftp error" 回答1: The ftp:// handler only allows creating

问题 A couple of questions really about the code below from which I gained assistance in a previous post. 1). Any ideas why at the end of the ouput, I get a random garbage character printed? I am freeing the files etc and checking for EOF. 2). The idea is that it can work with multiple file arguements, so I want to create new file names which increment, i.e. out[i].txt, is that possible in C? The code itself takes a file containing words all separated by spaces, like a book for example, then loops

问题 My question is regarding this question: segmentation fault on c K&R fopen and fillbuf. In this question, in myfopen() function, there is a for loop; what I don't understand is that fp will have value starting from _iob but I don't get what values will fp->flag take after the first three values(which have been fixed). Will they take zero values and one more thing is there that in the answers(see beneath the code) they are saying that we have to use malloc to provide memory space to fp but fp

问题 I seem to have a problem with a simple program that is supposed to count various character types in a file. It always prints zeroes even though the file is not empty at all. I think it has something to do with pointers, could be wrong. I would also like to know if initializing variables is necessary in this case? // fun.h void count_char(FILE *f, unsigned *newl, unsigned *let, unsigned *num, unsigned *spec_char); // main.c #include <stdio.h> #include "fun.h" int main() { unsigned newline = 0,

问题 This question already has answers here : copying the contents of a binary file (4 answers) Closed 6 years ago . The following program is intended to make a copy of one .exe application file.But just one little thing determines whether it indeed gives me a proper copy of the intended file RealPlayer.exe or gives me a corrupted file. What I do is read from the source file in binary mode and write to the new copy in the same mode.For this I use a variable ch .But if ch is of type char , I get a

问题 This is related to my question here: problem opening file in ios container using fopen() I have a file in iphone's container at /var/mobile/Containers/Data/Application/.../Documents/file.wav I have changed ViewController.m to ViewController.mm This is the code under test #import "ViewController.h" #include <stdio.h> NSArray *documentPaths; NSString *documentsDir; NSString *inputWavFile; NSString *outputWavData; const char *documentsDirCver; const char *outputWavDataCver; @interface

问题 I have a code as below which would basically read a file with contents which look like Auckland,Hamilton,Rotorua,Wellington 0, 125, 235, 660 125, 0, 110, 535 235, 110, 0, 460 660, 535, 460, 0 Now what I want to do is I want to separate out the first line and store it in a character array and from second line till the end(which is the matrix basically) into a 2dimensional integer array and ofcourse splitting by commas. So far I have split file by commas and have stored into characters array