std::valarray::resize

From cppreference.com
< cpplrm; | numericlrm; | valarray
void resize( std::size_t count, T value = T() );

Resizes the valarray to contain count elements and assigns value to each element.

This functions invalidates all pointers and references to elements in the array.

Parameters

count - new size of the container
value - the value to initialize the new elements with

Return value

(none)

Example

#include <valarray>
#include <iostream>
int main()
{
    std::valarray<int> v{1,2,3};
    v.resize(10);
    for(int n: v) std::cout << n << ' ';
    std::cout << '\n';
}

Output:

0 0 0 0 0 0 0 0 0 0

See also

returns the size of valarray
(public member function)