stdin

There isn't straightforward instruction on receiving a string as a variable in the std::io documentation , but I figured this should work: use std::io; let line = io::stdin().lock().lines().unwrap(); But I'm getting this error: src\main.rs:28:14: 28:23 error: unresolved name `io::stdin` src\main.rs:28 let line = io::stdin.lock().lines().unwrap(); ^~~~~~~~~ Why? I'm using a nightly Rust v1.0. Here's the code you need to do what you are trying (no comments on if it is a good way to go about it: use std::io::{self, BufRead}; fn main() { let stdin = io::stdin(); let line = stdin.lock() .lines()

GNU Date lets you convert date strings like so: $ date +"%d %m %Y" -d "yesterday" 04 01 2012 Is it possible to pipe a date string to it for conversion? I've tried the obvious -d - like so: $ echo "yesterday" | date +"%d %m %Y" -d - but it prints today's date instead of yesterdays. Is it possible to pipe values to it or doesn't it support that? Thanks. Yes. echo "yesterday" | xargs date +"%d %m %Y" -d date -f tells it to do the same thing as -d except for every line in a file... you can set the filename to - to make it read from standard input. echo "yesterday" | date +"%d %m %Y" -f - You can

So basically I want to copy everything i write to stdin (including newline char) to string for hash purposes. I managed to accomplish that and made small code to represent my problem. #include <stdio.h> #include <string.h> #include <stdlib.h> #define BUFFERSIZE 10000 int main() { char *myStr = calloc(1,1); char buffer[BUFFERSIZE]; while( fgets(buffer, BUFFERSIZE , stdin) != NULL ){ myStr = realloc(myStr, strlen(myStr)+1+strlen(buffer) ); strcat( myStr, buffer ); } printf("\n%s\n",myStr); } everything works when I enter some text then press ENTER and after I call EOF. But when I start program

This is for a homework assignment to sort some given strings. I'm prompting the user for the number of strings they'd like to sort with scanf , allocating an array based on that number, and then getting the strings themselves with fgets . Everything works fine if the number of strings is hardcoded, but the addition of scanf to let the user decide screws things up. Here's the code: #include <assert.h> #include <stdio.h> #include <stdlib.h> #define LENGTH 20 // Maximum string length. int main(void) { int index, numStrings = 0; char **stringArray; printf("Input the number of strings that you'd

I want to be able to use select() to work with entering a single char (no ENTER) from STDIN. So, when a user press a single key, select() should return immediately, not waiting for the user to hit ENTER. int main(void) { fd_set rfds; struct timeval tv; int retval; /* Watch stdin (fd 0) to see when it has input. */ FD_ZERO(&rfds); FD_SET(0, &rfds); /* Wait up to 2 seconds. */ tv.tv_sec = 2; tv.tv_usec = 0; retval = select(1, &rfds, NULL, NULL, &tv); if (retval == -1) perror("select()"); else if (retval) printf("Data is available now.\n"); else printf("No data within five seconds.\n"); exit(EXIT

I want to make a program that forces it's user to input text but doesn't allow him to erase any of it, what's a simple way of doing it in C? The only thing I've got is (c = getchar()) != EOF && c != '\b' which doesn't work. Any ideas? POSIX - unix version #include <sys/types.h> #include <termios.h> #include <stdio.h> #include <string.h> int main() { int fd=fileno(stdin); struct termios oldtio,newtio; tcgetattr(fd,&oldtio); /* save current settings */ memcpy(&newtio, &oldtio, sizeof(oldtio)); newtio.c_lflag = ICANON; newtio.c_cc[VERASE] = 0; /* turn off del */ tcflush(fd, TCIFLUSH); tcsetattr