Answers for "c++ resize"

how can i use resize in c++?

vectorname.resize(int n, int val)
// n – it is new container size, expressed in number of elements.
// val – if this parameter is specified then new elements are initialized with this value.

when a vector in c++ is resized what happens to the elements of the vector

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.