pop_back() function in the vector class

does this function pop out the top value in a vector? how do i pop out the top value and store it in another variable? it doesn't work when i do this:

x = stringvector.pop_back();

how about just pop()?

Vectors don't have a pop() function. Why not just use the [] operator? If you want the first element it'd be vectorname[0], if you want the last element it'd be vectorname[vectorname.size()];

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Originally posted by Vector Man
does this function pop out the top value in a vector? how do i pop out the top value and store it in another variable? it doesn't work when i do this:

x = stringvector.pop_back();

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Check the syntax of the pop_back function, its possible you have to pass a variable reference in rather than returning one.

It supports and erase() method:

vector::size_type size;
size = svec.size();

svec.erase(size);

But you should also probably be using iterators to identify the type.

Some function definitions:

Code:

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void pop_back();

reference back();
const_reference back() const;
//The member function returns a reference to the last element of the controlled sequence, which must be non-empty.

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vector's pop_back()'s return type is void. back() returns a reference to the last element, so just use that before you pop_back()

here's a list of all the functions in vector:

Code:

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vector
allocator_type · assign · at · back · begin · capacity · clear ·
const_iterator · const_reference · const_reverse_iterator ·
difference_type · empty · end · erase · front · get_allocator ·
insert · iterator · max_size · operator[] · pop_back · push_back ·
rbegin · reference · rend · reserve · resize · reverse_iterator ·
size · size_type · swap · value_type · vector

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just look at 'vector' in MSVC or check out this link at dinkumware:
http://dinkumware.com/manuals/reader...&h=vector.html

Quote:

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Originally posted by Eibro
Vectors don't have a pop() function. Why not just use the [] operator? If you want the first element it'd be vectorname[0], if you want the last element it'd be vectorname[vectorname.size()];

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Code:

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vectorname[vectorname.size()-1];  //Or my program is buggier than I think

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Quote:

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Originally posted by Eibro
Vectors don't have a pop() function. Why not just use the [] operator? If you want the first element it'd be vectorname[0], if you want the last element it'd be vectorname[vectorname.size()];

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d'oh... i was thinking of a queue

Quote:

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Originally posted by Sang-drax

Code:

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vectorname[vectorname.size()-1];  //Or my program is buggier than I think

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I do that all the time. I know better, yet I still do it. That's it, i'm outta here.