Can you resize a C++ array after initialization? [duplicate]

Answer 1

You can use the [] operator with a vector the same way you would in an array. You could implement this with a vector something like this (if you wanted to use more vector methods):

#include 

const int halfelements = originalarray.size()/2; //use size to get size
vector  farray(halfelements);
vector  farray(halfelements);

for (int i = 0; i < halfelements; i++) {
    farray.push_back(originalarray[i]); //adds element at i to the end of vector
}

for (int i = halfelements, x = 0; i < (halfelements * 2); i++, x++) {
    sarray.push_back(originalarray[i]);
}

You can also use .at(index) to add bounds checking to the vector access.