Visual studio error?

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I'm getting getline error on my code when I run it in Visual Studio. But when I run it on DevC++ it's working like a charm. Error message : E0020 identifier "getline" is underfined. What's going on? Here's my code:

C++

<pre>
//Read from a file

#include <iostream>
#include <fstream>          //Must have
using namespace std;

int main(){
	string mytext;
	ifstream myreadfile("code.txt");        //Must be on same folder as compiler saving path
	
	while (getline (myreadfile, mytext)){        //While loop to be able to print the data
		cout<<mytext;
	}
	myreadfile.close();                 //Close the file after
	
	return 0
;}

What I have tried:

I don't know what I should do cause it's working on different compiler so, is it my fault or?

Posted 6-May-21 23:40pm

Nektarios Kouromichelakis

Updated 7-May-21 0:03am

v4

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CPallini 7-May-21 5:50am

Could you please post the exact error message?

Nektarios Kouromichelakis 7-May-21 5:54am

E0020 identifier "getline" is underfined

2 solutions

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Nektarios Kouromichelakis · Accepted Answer · 2021-05-07T00:02:00

I did a bit of a research and found a solution. Visual Studio needs the <string> library to identify the getline command.

Here's the code refactored and fixed :

C++

<pre>//Read from a file

#include <iostream>
#include <fstream>         //Must have
#include <string>          //Fixed with the string library
using namespace std;

int main(){
	string mytext;
	ifstream myreadfile("code.txt");        //Must be on same folder as compiler saving path
	
	while (getline (myreadfile, mytext)){        //While loop to be able to print the data
		cout<<mytext;
	}
	myreadfile.close();                 //Close the file after
	
	return 0
;}

CPallini · Accepted Answer · 2021-05-07T00:03:00

Solution 2

Add

C++

#include <string>

At the top of your file.
See, for instance, c++ - getline: identifier not found - Stack Overflow[^]).

Posted 7-May-21 0:03am

CPallini

Comments

Nektarios Kouromichelakis 7-May-21 6:06am

That's where I looked to. Thank you :)

CPallini 7-May-21 6:08am

You are welcome.