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C++ read from .txt file and assign to string

Zuccers
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Go to solution Solved by databreach,

You should be able to do so using:

#include <sstream>
#include <string>

std::string line;
while (std::getline(infile, line))
{
    std::istringstream iss(line);
    int a, b;
    if (!(iss >> a >> b)) { break; } // error

    // process pair (a,b)
}

 

More solutions here: https://stackoverflow.com/questions/7868936/read-file-line-by-line-using-ifstream-in-c

Hello all, I have a small problem with C++, I am trying to read from a .txt file and line by line assign to string or integer, I can't figure anything out on this part, so I don't have any code, tried searching, but couldn't find and the w3 schools example with "getline()" doesn't work. Any help would be very useful.
Gratefully,
Zuccers.

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You should be able to do so using:

#include <sstream>
#include <string>

std::string line;
while (std::getline(infile, line))
{
    std::istringstream iss(line);
    int a, b;
    if (!(iss >> a >> b)) { break; } // error

    // process pair (a,b)
}

 

More solutions here: https://stackoverflow.com/questions/7868936/read-file-line-by-line-using-ifstream-in-c

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8 hours ago, Zuccers said:

Hello all, I have a small problem with C++, I am trying to read from a .txt file and line by line assign to string or integer, I can't figure anything out on this part, so I don't have any code, tried searching, but couldn't find and the w3 schools example with "getline()" doesn't work. Any help would be very useful.
Gratefully,
Zuccers.

You already have your solution but I highly suggest reading through this website https://en.cppreference.com/w/cpp/header as it lists all the C++ STL (standard template library) libraries which are all under the std namespace. It also includes descriptions and functional code examples for each function and library. Highly useful for novices and experts a like because it has everything under the sun.

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23 hours ago, trag1c said:

You already have your solution but I highly suggest reading through this website https://en.cppreference.com/w/cpp/header as it lists all the C++ STL (standard template library) libraries which are all under the std namespace. It also includes descriptions and functional code examples for each function and library. Highly useful for novices and experts a like because it has everything under the sun.

Thanks, will do, it will come in handy.

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