given the code below can you tell me why vector vec_size shows up as an error in my code

#include #include using namespace std; int main() { //declare variables int size, total, avg; cout<<"How many numbers are we calculating?:"<>size; vector vec_size(size); cout<<"Enter the numbers you wish to calculate:"<>vec_size[i]; } //calculating the total and mean total = 0; for(int i=0;i