fgets

问题 I am trying to intake a string from user input and then compare that to my linked list that i have created previously in the code and find the location as to where the string should be inserted. And stop looping when user enters nothing and hits enter. I am able to intake the string and find the location to insert, but what I want to do is to loop until the user enters a blank input. This is causing my code to break somewhere and I am not quite sure why. I have inserted break points in my

问题 Closed . This question is opinion-based. It is not currently accepting answers. Want to improve this question? Update the question so it can be answered with facts and citations by editing this post. Closed 3 years ago . I'm just a young computer science student, and currently I'm a bit confused about what is the best practice to read a string from stdin . I know that there are a lot of ways to do that, some safer than other, and so on... I'm currently in need of a function that prevents

问题 I'm pretty new to C. Writing in Visual Studio 2015, I'm trying to safely prompt a user for a string by using fgets. I want to use fgets to get the string, check if the string is too long, and reprompt the user if it is until they enter a good string. Here is my code /* * Nick Gilbert * COS317 Lab 2 Task 2 */ #include "stdafx.h" int main() { char str[10]; int isValid = 0; while (isValid == 0) { printf("Please enter a password: "); fgets(str, 10, stdin); if (strlen(str) == 9 && str[8] != '\n')

问题 I am attempting to assign the string returned by the fgets() function to an array in PHP. I have tried test strings and they work fine. I have also made sure that fgets() is returning items, but still no joy. Thinking that it may be a timing issue, I had the function run onload and that didn't work. My code is below; any help on this would be much appreciated. function createDataArray() { global $resultsArray; $i = 0; $file = fopen("downloads/E0.csv","r"); while(! feof($file)) { $line = fgets

问题 Code 1:- int main() { char str[200]; fgets(str,200,stdin); printf("%s",str); return 0; } Output:- ab cd ab cd (line feed) Code 2:- int main() { char str[200]; gets(str); printf("%s",str); return 0; } Output:- ab cd ab cd When I enter ab(space)cd(enter key) , then in case of fgets() I am getting a line feed in the output, whereas in case of gets() , no new line feed is displayed. What is the matter of the line feed in this case. 回答1: gets() and fgets() read for a FILE in to the buffer provided

问题 I need to generate a matrix (30x900) of data (for complex analysis) after reading said data from a csv (text) file. I can read the data in to matlab using fgets, unfortunately I can't use load as the data has a header. The files look like this: 872 30 FR (Data below here needs to be put in to matrix) 0000.0 0000.0 0000.0 0001.0 0000.0 0000.0 0002.0 0000.0 0000.0 Is it possible to do this? 回答1: Use csvread instead. filename = 'file.txt'; numberOfLinesInHeader = 3; M = csvread(filename,

问题 I’m trying to make a C program which is prompting the user to type a message from the console and then show that message the user has typed, as in the following example: C:>promptTest type your message >>>> test typed : test C:> This is my code: #include <stdio.h> #include <string.h> int main(){ char msg[32]; printf("type your message >>>>\t"); fgets(msg,sizeof(msg),stdin); msg[strlen(msg) - 1] = '\0'; printf("typed : %s\n",msg); return 0; } It can be built on both Windows7 and CentOS and it

问题 I've spent a lot of time on this fgets() problems without any success until now. I'm receiving data from different sources through a HTTP socket. It worked fine until now that I have a lot more different sources. My goal is just to get rid of the execution timeout of php, just know that it timed out after 15 seconds but go on with the next source. Here is my small piece of code: //This is just from php.net, found out that it works pretty good $time = time(); while (!($temp = fsockopen($host,

问题 I'm looping through each line of a TCP socket input using fdopen and fgets like this: int connfd = accept(listenfd, (struct sockaddr*)NULL, NULL); FILE *f; char line[1024]; f = fdopen(connfd, "a+"); while(fgets(line, sizeof(line), f) != NULL) { printf("%s", line); } printf("EOF"); fclose(f); The problem is that it looks like fgets never returns NULL for some strange reason. Is there any other way to check for EOF ? 回答1: You'll only receive and end of file on a socket if the socket gets closed

问题 I am getting the error SEGV on unknown address while running my program. I am pretty sure it is coming from fgets() but i am not quite sure why. Before this, I was using scanf() and it was working fine. the input was going into the array just fine, but I had to use fgets() for the program to detect an input of a new line. Can anyone help me understand why I am getting this error and suggest a way to fix this problem? #include <stdio.h> #include <stdlib.h> int main(void) { int x = -1; int y =