What is the easiest way to initialize a std::vector with hardcoded elements?

Question

I can create an array and initialize it like this:

int a[] = {10, 20, 30};

How do I create a std::vector and initialize it sim

Answer 1

There are various ways to hardcode a vector, i will share few ways:

1. Initializing by pushing values one by one

// Create an empty vector 
    vector vect;  

    vect.push_back(10); 
    vect.push_back(20); 
    vect.push_back(30); 

2. Initializing like arrays

vector vect{ 10, 20, 30 };

3. Initializing from an array

    int arr[] = { 10, 20, 30 }; 
    int n = sizeof(arr) / sizeof(arr[0]); 

    vector vect(arr, arr + n); 

4. Initializing from another vector

    vector vect1{ 10, 20, 30 }; 

    vector vect2(vect1.begin(), vect1.end());