Initialializing a std::deque

[joatmon]

Trying to initialize five deques from the STL library like this:

for (int i = 0; i < 5; i++)
    {
        deque<int> line(i);
    }

Later, when I try to use the lines, (as in line(1).size()), I get an error that says 'line' was not declared in this scope.

What am I doing wrong here? Thanks.

[DSLq5Di1]

I am a little confused as to what you are trying to do.. initialize a deque with 5 elements? or create an array of 5 deques?

[joatmon]

Sorry, I'm working on a program that simulates a grocery store checkout process. I'm trying to create 5 separate std::deques that will hold the customers as they enter each of the five checkout lines.

Thanks.

[DSLq5Di1]

You have two options,

deque<int> line[5]; // limited to default construction for each element

or

vector< deque<int> > line;

for (int i = 0; i < 5; i++)
{
    line.push_back( deque<int>(i) );
}

// line[0].size(), line[1].size(), etc 

[joatmon]

Thanks. I appreciate your help.