stdin

I am encoutering this problem. I am using while loop to scan string of numbers and need to end scanning and start proceeding the rest of my program. I just can't figure out, how to flush the stdin or do anything to not press Ctrl+D twice. I just need to send EOF only once to tell my loop to end. while (! feof (stdin)) {status=scanf ("%d", &array[i]); if ( (status != 1 && status != EOF) ) { printf("\nWrong input.\n"); return 1;} i++;} Edit: it's bug 1190 on glibc , it was apparently done purposefully for System V compatibility (and Solaris behaves in the same way, FreeBSD and NetBSD behave as

I'm sorry for this silly question. I have C program to prompt user to enter age and name and then print the age and name to the screen. This is my exercise that I read from book. This the program: #include <stdio.h> int main (void) { int age; char name[20]; puts("Enter your age:"); scanf("%d",&age); fflush(stdin); puts("Enter your name:"); scanf("%s",name); printf("Your age is %d\n",age); printf("Your name is %s\n",name); return 0; } When I enter extra characters to the first scanf() the program terminates and assign the extra characters to the next scanf() And then I changed the code, and add

I'm building a PromptSet that can ask a series of questions in a row. For testing reasons, it allows you to pass a reader and writer instead of using stdin & stdout directly. Because stdin and stdout are the common use case, I would like to create a default "constructor" that allows the user to produce a PromptSet<StdinLock, StdoutLock> without needing any parameters. Here's the code so far: use std::io::{self, BufRead, StdinLock, StdoutLock, Write}; pub struct PromptSet<R, W> where R: BufRead, W: Write, { pub reader: R, pub writer: W, } impl<R, W> PromptSet<R, W> where R: BufRead, W: Write, {

How can I use Scanln that accepts whitespace as input? You can't use the fmt package's Scanln() and similar functions for what you want to do, because quoting from fmt package doc: Input processed by verbs is implicitly space-delimited: the implementation of every verb except %c starts by discarding leading spaces from the remaining input, and the %s verb (and %v reading into a string) stops consuming input at the first space or newline character. The fmt package intentionally filters out whitespaces, this is how it is implemented. Instead use bufio.Scanner to read lines that might contain

How do I fill an 80-character buffer with characters as they are being entered or until the carriage return key is pressed, or the buffer is full, whichever occurs first. I've looked into a lot of different ways, but enter has to be pressed then the input char* gets cut off at 80.. Thanks. If you really want the characters "as they are entered", you cannot use C io. You have to do it the unix way. (or windows way) #include <stdio.h> #include <unistd.h> #include <termios.h> int main() { char r[81]; int i; struct termios old,new; char c; tcgetattr(0,&old); new = old; new.c_lflag&=~ICANON;

I'm trying to write a little tool that will let me pipe command output to the clipboard. I've read through multiple answers on Stack Overflow, but they didn't work for me, because they didn't include piping, or because they didn't use a function, or they just threw errors (or maybe I just messed up). I threw up my hands with PowerShell and decided to go with Python. I created a Python script called copyToClipboard.py : import sys from Tkinter import Tk if sys.stdin.isatty() and len(sys.argv) == 1: #We're checking for input on stdin and first argument sys.exit() tk = Tk() tk.withdraw() tk