std::vectormyVec; myVec.assign({1, 2, 3, 4, 5});
std::vectorThis code creates a vector called `myVec` with 3 elements. The `assign` function then replaces the existing elements with the values 1, 2, 3, and 4, resizing the vector to have 4 elements. The package/library used is the C++ Standard Library. Overall, the std vector assign function is a useful tool for initializing or replacing the values of a vector.myVec(3); myVec.assign({1, 2, 3, 4});