1, the simplest approach
Idea: cycle-by-assignment
#include <iostream>
#include <vector>
int main () {
std::vector<int> input({1,2,3,4,5});
int n = input.size();
int arr[n];
for(int i=0; i<n; i++){
arr[i] = input[i];
}
for(int i:arr){
std::cout << i << ' ' ;
}
return 0;
}
2, using the standard library function std :: copy
#include <iostream>
#include <algorithm>
#include <vector>
int main () {
std::vector<int> input({1,2,3,4,5});
int arr[input.size()];
std::copy(input.begin(), input.arr(), arr);
for(int i: arr){
std::cout << i << ' ';
}
return 0;
}
Thanks: https://www.techiedelight.com/convert-vector-to-array-cpp/