Printing out Vector with strings

Question

I have the code below. The code is followed by a sample input file. When I go to cout the arrays it does it like this:

Output:

Joe
Browns
93
Samantha
Roberts
45

Why is the string only reading until the white-space and then moving on? I thought string accepts white-space? Thanks.

Code:

    ifstream in_stream;

    in_stream.open("in.dat");
    if(in_stream.fail())
    {
        cout<< "Input file opening failed.  \n";
        exit(1);
    }
    vector <string> a;
    int i = 0;
    string dummy;
    while(in_stream>>dummy)
    {
       a.push_back(dummy);
       cout<<a[i]<<endl;
        i++;
    }
    in_stream.close( );

Sample Input File:

Joe Browns
93
Samantha Roberts
45

score 1 · Answer 1 · answered Feb 25 '13 at 22:43

1

operator>> interprets any kind of whitespace as a delimiter. Use getline() if you need to read entire lines.

answered Feb 25 '13 at 22:43

us2012

15,457
2
41
61

alright, If I do getline(in_stream, dummy); it returns in a funny format; so that's not quite right yet – Feb 25 '13 at 22:50
1

@user22507 If it's too funny for you, it might be a problem with your sense of humor :) . Jokes aside, you really should say what's wrong with it. `getline` doesn't normally do any strange formatting. – us2012 Feb 25 '13 at 22:52

score 0 · Answer 2 · answered Feb 25 '13 at 22:46

0

Change the while loop so you read the whole line.

while (getline(in_stream, dummy))
{
    a.push_back(dummy);
    cout << a[i] << endl;
    i++;
}

answered Feb 25 '13 at 22:46

Christian Rapp

1,614
20
34

1

Using .eof in while loop is NOT Good. http://stackoverflow.com/questions/5605125/why-is-iostreameof-inside-a-loop-condition-considered-wrong – Feb 25 '13 at 22:47

Printing out Vector with strings

2 Answers2