Below methods can be used to initialize the vector in c++.
int arr[] = {1, 3, 5, 6};
vector v(arr, arr + sizeof(arr)/sizeof(arr[0]));
vectorv;
v.push_back(1);
v.push_back(2);
v.push_back(3); and so on
vectorv = {1, 3, 5, 7};
The third one is allowed only in C++11 onwards.