A C function that reads an entire line from a stream. It was originally a GNU extension that was standardized in POSIX.1-2008.
Questions tagged [getline]
1656 questions
1981
votes
10 answers
Why is reading lines from stdin much slower in C++ than Python?
I wanted to compare reading lines of string input from stdin using Python and C++ and was shocked to see my C++ code run an order of magnitude slower than the equivalent Python code. Since my C++ is rusty and I'm not yet an expert Pythonista, please…
JJC
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75
votes
7 answers
When and why do I need to use cin.ignore() in C++?
I wrote a very basic program in C++ which asked the user to input a number and then a string. To my surprise, when running the program it never stopped to ask for the string. It just skipped over it. After doing some reading on StackOverflow, I…
Raddicus
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66
votes
4 answers
Going through a text file line by line in C
I have been working on a small exercise for my CIS class and am very confused by the methods C uses to read from a file. All that I really need to do is read through a file line by line and use the information gathered from each line to do a few…
Dan Bradbury
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63
votes
1 answer
reading a line from ifstream into a string variable
In the following code :
#include
#include
#include
using namespace std;
int main() {
string x = "This is C++.";
ofstream of("d:/tester.txt");
of << x;
of.close();
ifstream read("d:/tester.txt");
…
Suhail Gupta
- 19,563
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52
votes
7 answers
Using getline() in C++
I have a problem using getline method to get a message that user types, I'm using something like:
string messageVar;
cout << "Type your message: ";
getline(cin, messageVar);
However, it's not stopping to get the output value, what's wrong with…
MGE
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47
votes
13 answers
Using getline(cin, s) after cin
I need the following program to take the entire line of user input and put it into string names:
cout << "Enter the number: ";
int number;
cin >> number;
cout << "Enter names: ";
string names;
getline(cin, names);
With the cin >> number command…
pauliwago
- 5,359
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47
votes
4 answers
cin and getline skipping input
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 createNewCustomer () {
string name, address;
cout…
hakuna matata
- 2,831
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- 85
42
votes
2 answers
checking for eof in string::getline
How do I check for end-of-file using the std::getline function? If I use eof() it won't signal eof until I attempt to read beyond end-of-file.
assassin
- 16,522
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37
votes
5 answers
std::cin.getline( ) vs. std::cin
When should std::cin.getline() be used? What does it differ from std::cin?
Simplicity
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32
votes
8 answers
c++ getline() isn't waiting for input from console when called multiple times
I'm attempting to get a few user-input parameters from the console, two strings, two ints and a double. The relevant code I'm trying to use is this:
#include
#include
using namespace std;
// ...
string inputString;
unsigned int…
user754852
- 413
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27
votes
6 answers
Why are there two different getline() functions (if indeed there are)?
Every time I do a quick snippet of C++ code line
std::string s;
cin >> s;
I curse myself because I forgot it stops at the whitespace rather than getting an entire line.
Then, on remembering getline, I invariably become confused as to the two…
paxdiablo
- 772,407
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26
votes
3 answers
getline() does not work if used after some inputs
Possible Duplicate:
Need help with getline()
getline() is not working, if I use it after some inputs, i.e.
#include
using namespace std;
main()
{
string date,time;
char…
Muhammad Arslan Jamshaid
- 1,246
- 6
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25
votes
4 answers
std::getline() returns
I have a loop that reads each line in a file using getline():
istream is;
string line;
while (!getline(is, line).eof())
{
// ...
}
I noticed that calling getline() like this also seems to work:
while (getline(is, line))
What's going on here?…
Ferruccio
- 93,779
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23
votes
3 answers
getline not working properly ? What could be the reasons?
Possible Duplicate:
getline not asking for input?
There is some unique thing happening in my program.
Here are some set of commands :
cout << "Enter the full name of student: "; // cin name
getline( cin , fullName );
cout << "\nAge: "; //…
Suhail Gupta
- 19,563
- 57
- 170
- 298
22
votes
4 answers
Can I use 2 or more delimiters in C++ function getline?
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
CityA, CityB, 200
I am using getline(file, line), but I…
user6185425