Control display output using vector

Question

Vector size: 2

Vector data: Carol Mary

if(vector.size() >=2)
{
    cout<<vector.size();

    for(int i=1;i<vector.size()-2;i++)
    {
        cout<<" AND ";
    }
}

Output display: Carol AND Mary AND

How do i change it to Carol AND Mary?

and when my vector size is 3,

How do i change it to Carol AND Mary AND Peter

Thanks in advance!

From where Carol, Mary & Peter are coming ? Are they in vector ? — P0W, Aug 12 '13 at 17:12
I'm pretty sure you missed `vector[i] <<`. Try to construct [a short, *complete* running program](http://sscce.org/#selfcon) and copy-and-paste its code into the question. — Bernhard Barker, Aug 12 '13 at 17:14
Don't call your vector `vector`, that will just lead to confusion. — Bernhard Barker, Aug 12 '13 at 17:16

pippin1289 · Accepted Answer · 2013-08-12T17:46:53.757

3

lets assume the vector is named v.

if(!v.empty()) {
  cout << v[0];
  for(int i = 1; i<v.size(); ++i) {
    cout << " AND " << v[i];
  }
}

edited Aug 12 '13 at 17:46

answered Aug 12 '13 at 17:15

pippin1289

Good call, I believe i fixed the answer now. Require it to be non empty. Thanks! – pippin1289 Aug 12 '13 at 17:47

score 1 · Answer 2 · edited Apr 13 '17 at 12:40

1

I'd use my infix_ostream_iterator:

std::copy(vec.begin(), vec.end(), 
         infix_ostream_iterator<std::string>(std::cout, " AND "));

The infix_ostream_iterator code is on CodeReview.SE.

edited Apr 13 '17 at 12:40

Community

answered Aug 12 '13 at 17:19

Jerry Coffin

score 1 · Answer 3 · answered Aug 12 '13 at 20:39

Just to add my preferred way:

const char *sep = "";
for (size_t i=0; i<vec.size(); ++i, sep=" AND ")
    cout << sep << vec[i];
cout << endl;

Or, even shorter:

cout << join(vec, " AND ") << endl;

That is, using boost::algorithm::join(), works like in Python (" AND ".join(vec)).

score 0 · Answer 4 · answered Aug 12 '13 at 17:17

0

std::vector<std::string> vec {"Carol","Marry","Peter"};

int i=1;
std::cout<<vec[0];

for(;i<vec.size();++i)
  std::cout<<" AND "<<vec[i];

answered Aug 12 '13 at 17:17

P0W

4 Answers4