macOS Need getline() for xcode

[lolapurple]

So I am writing this code for my class.

the information in TruckTireTemp.txt is as follows:

65
77
68
80
59
78
79
89
58
69

Can somebody tell me what the output looks like on a program that recognizes getline() as a function?

Here is the code I wrote

#include<iostream>
#include<fstream>
#include <string>
using namespace std;
int main()
{
    string myline;
    ofstream myfile ("TruckTireTemp.txt");
    if(myfile.is_open())
    {
        while ( ! myfile.eof())
        {
        getline(myfile, myline);
        cout << myline <<endl;
        }
        myfile.close();
    }
    else cout << "Ooops! Unable to open file" <<endl;
    system("pause");
    return 0;
}

When I do this it always says "no matching function for call to 'getline'"

 

[mfram]

First, you should probably be using an 'ifstream', not an 'ofstream'.

Second, you shouldn't be using 'system("pause")' on a Mac. That's not going to do anything. "pause" is not a valid shell command.

 

[Madd the Sane]

If getline isn't linking, try including the stdio header.

Edit: to force it to use the c function, you can add two colons in front of getline.

Also, you may need change your code more, as getline doesn't take the arguments you are trying to use.

 

[pstoehr]

Hi,

for me this task looks like the homework of a programming class ;-)

Nevertheless some hints:
1) As mfram already mentioned you have to use ifstream as you want to get an Input stream.
2) getline(...) is a method (C++) not a function (C). That means you have to have an instance that receives this message.
3) Get a good book about C++.

Best regards
Peter

 

[jsagurton]

Although it seems like your problem has been solved, you should definitely get a good book. I'd recommend Tony Gaddis's "Starting out with C++". That's the book I used a few years ago when I learned C++, and I've recommended it to quite a few people that have liked it as well. I think the current edition is the 7th, but I imagine the 6th edition isn't much different (although obviously look into that) and could likely be gotten dirt cheap on half.com.