getline Questions
3
Data saved in my file is (white spaces added at both beginning and end on purpose for this test):
1 2 3
Loading the data using the code below with or without "std::ws" does not cause any differ...
Proto asked 3/9, 2015 at 0:37
1
Solved
I am trying to read user input until ctrl-d is hit. If I am correct, ctrl+d emits an EOF signal so I have tried checking if cin.eof() is true with no success.
Here is my code:
string input;
cout ...
1
TL;DR
A program that uses the libc++ version of the getline function will block when it reads input from a pipe until the pipe's buffer is full.
The same is NOT true for the libstdc++ version of ...
4
Solved
So I'm trying to read input like this from the standard input (using cin):
Adam English 85
Charlie Math 76
Erica History 82
Richard Science 90
My goal is to eventually store each data piece...
Fraudulent asked 13/3, 2016 at 18:58
2
Solved
Given a file test.txt with the following contents:
ABC DEF GATTAG GHK
ABC DEF GGCGTC GHK
ABC DEF AATTCC GHK
the 3rd column needs to be modified, so that the string is reverse complement. Part o...
5
#include<iostream>
using namespace std;
int main()
{
char test[10];
char cont[10];
cin.getline(test,10);
cin.getline(cont,10);
cout<<test<<" is not "<<cont<<en...
3
Solved
I'm trying to learn erlang through interviewstreet. I just learning the language now so I know almost nothing. I was wondering how to read from stdin and write to stdout.
I want to write a simple ...
1
Solved
I just started programming and have a beginner question, I want to write a function to read a file with unknown length line by line. Since I wouldn't know the length of each line so I used getline(...
Subarctic asked 27/2, 2017 at 6:6
1
Solved
The reason why I would want to do this is because I want to read from a file line-by-line, and for each line check whether it matches a regex. I am using the getline() function, which puts the line...
Jasso asked 17/11, 2016 at 0:4
1
Hi I need to read a file that looks like this...
1|Toy Story (1995)|Animation|Children's|Comedy
2|Jumanji (1995)|Adventure|Children's|Fantasy
3|Grumpier Old Men (1995)|Comedy|Romance
4|Waiti...
1
Solved
I have a simple C++ program which reads a file line by line. Some lines contain more than 20000 characters. The following program can only read 4095 characters of those big line. I think it is beca...
4
Solved
I would like to know how can I use 2 or more delimiters in the getline functon, that's my problem:
The program reads a text file... each line is goning to be like:
New Your, Paris, 100
C...
4
Solved
Good evening,
I am working through the exercises in Kernighan's and Ritchie's classic "The C Programming Language".
In several places the exercises have you creating your own version of a f...
4
I am learning to use getline in C programming and tried the codes from http://crasseux.com/books/ctutorial/getline.html
#include <stdio.h>
#include <stdlib.h>
#include <string.h>...
2
Solved
I wanna read and remove the first line from a txt file (without copying, it's a huge file).
I've read the net but everybody just copies the desired content to a new file. I can't do that.
Below a ...
Uraemia asked 1/3, 2016 at 12:57
1
Solved
To my knowledge, there is no libc equivalent to getline() that works with a file descriptor instead of working with a FILE *.
Is there a (technical) reason for that?
5
cout << "How many questions are there going to be on this exam?" << endl;
cout << ">>";
getline(cin, totalquestions);
This small piece of code comes from a function in a c...
3
Solved
I am following the C++ Primer book and trying out all the code examples.
I am intrigued by this one:
#include <iostream>
#include <string>
using std::string;
using std::cin;
using st...
Phenolic asked 23/7, 2015 at 21:52
3
Solved
I want to read lines from a file line-by-line, but it's not working for me.
Here is what I tried to do:
FILE *file;
char *line = NULL;
int len = 0;
char read;
file=fopen(argv[1], "r");
if ...
1
I'm finding that gcount on an ifstream object after a call to
getline(istream &, string &)
returns 0.
Is this supposed to be the case?
4
Solved
earlier i posted a question about cin skipping input, and I got results to flush, and use istringstream, but now I tried every possible solution but none of them work.
here is my code:
void...
2
Solved
I'm writing a program in C using Code::Blocks 13.12 on Windows 8 (the C compiler is mingw32-gcc). I would like to use the "getline" function but it seems to be missing from the stdio.h. Is there an...
Targe asked 9/12, 2014 at 14:56
2
Solved
my program reads a line from a text file using :
std::ifstream myReadFile("route.txt");
getline(myReadFile, line)
And if it finds something that i'm looking for (tag) it stores that line in a te...
1
Solved
I have the following text file structure (the text file is pretty big, around 100,000 lines):
A|a1|111|111|111
B|111|111|111|111
A|a2|222|222|222
B|222|222|222|222
B|222|222|222|222
A|a3|333|333...
4
Solved
If I use the following code, getline doesn't take the last input(for last iteration of "for" loop, it simply skips it) -
int main()
{
int n;
map<string, set<string> > lst;
str...
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