Taking input of integers until a newline in C/C++

Question

Possible Duplicate:
How to read integers from a file, line by line in C++

Please anyone can suggest me how to take input of integers until a newline in C++.

Suppose the input stream is

10 10 10 10 10 10 10 10 10 10, followed by a newline in C++.

[so] isn't a code writing service. Have you tried anything at all? Are you writing a console application? A Windows form? Maybe start with `cin` and `cout` for some research material. — Cᴏʀʏ, Aug 16 '12 at 18:01
this question is a mess, 2 languages and an undefined context where we are suppose to apply your requirements: you can ask about how to read from a console in C or how you read from a stream from a modem in C++ . — user827992, Aug 16 '12 at 18:04
GetKeyState(key code); gives true/false if the key given is pressed or not. This way, you can check if user pressed "space" and "enter" keys — huseyin tugrul buyukisik, Aug 16 '12 at 18:13

score 5 · Answer 1 · answered Aug 16 '12 at 18:01

5

std::string the_string;
std::getline(the_stream, the_string);
std::istringstream iss(the_string);
for (int n; iss >> n; )
{
    // do something with n
}

answered Aug 16 '12 at 18:01

Benjamin Lindley

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This is pretty neat. – The Room Apr 28 '20 at 10:12

score 5 · Accepted Answer · edited May 23 '17 at 12:19

Likely duplicate of: How to read groups of integers from a file, line by line in C++

If you want to deal in a line per line basis:

int main()
{
   std::string line;
   std::vector< std::vector<int> > all_integers;
   while ( getline( std::cin, line ) ) {
      std::istringstream is( line );
      all_integers.push_back( 
            std::vector<int>( std::istream_iterator<int>(is),
                              std::istream_iterator<int>() ) );
   }
}

Taking input of integers until a newline in C/C++

2 Answers2

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