# Can you have a two-dimensional vector C++?

## Can you have a two-dimensional vector C++?

A 2D vector is a vector of the vector. Like 2D arrays, we can declare and assign values to a 2D vector!

### What is a 2 dimensional vector?

Two-Dimensional Vectors The magnitude of a vector is the total amount of the quantity represented by the vector. For a two-dimensional vector, the magnitude is equal to the length of the hypotenuse of a triangle in which the sides are the x- and y-components.

Can you have a vector of strings in C++?

Conclusion: Out of all the methods, Vector seems to be the best way for creating an array of Strings in C++.

What is a 2D vector C++?

Also referred to as vector of vectors, 2D vectors in C++ form the basis of creating matrices, tables, or any other structures, dynamically. Before arriving on the topic of 2D vectors in C++, it is advised to go through the tutorial of using single-dimensional vectors in C++.

## How do you find the dimensions of a 2D vector?

Show activity on this post. To get the size of v2d, simply use v2d. size(). For size of each vector inside v2d, use v2d[k].

### Can you store strings in a vector?

Solution. Use a vector for array-like storage of your strings. Example 4-6 offers a simple example. vector s follow array semantics for random access (they also do a lot more), so they are easy and familiar to use.

How do you initialize a string vector in C++?

vector (size_type n, const value_type& val, const allocator_type& alloc = allocator_type()); It accepts the size of vector and an element as an argument. Then it initializes the vector with n elements of value val. Lets see an example that how to initialize a vector of std::string to 5 string objects with value “Hi”.

How do you clear a two dimensional vector in C++?

clear() function is used to remove all the elements of the vector container, thus making it size 0….Algorithm

1. Run a loop till the size of the vector.
2. Check if the element at each position is divisible by 2, if yes, remove the element and decrement iterator.
3. Print the final vector.

## How do you set the size of a vector in C++?

The C++ function std::vector::resize() changes the size of vector. If n is smaller than current size then extra elements are destroyed. If n is greater than current container size then new elements are inserted at the end of vector. If val is specified then new elements are initialed with val.