Initializing the List using the fill() function

8. Using a lambda expression and the generate() function:

One can also initialize a list using the fill() function in C++. The ‘fill’ function assigns any particular value to all the elements in the given range. Here the range is provided with the help of iterators.

Syntax:

list<data_type> li(n);
fill(li.begin(), li.end(), val);

// Here, the list li is initialized with n as size and the value of all elements as val.

Example:

C++

// C++ program to initialize the List
// using fill function
#include<bits/stdc++.h>
using namespace std;
 
int main()
{
    // Initialising the list
    list<int> li(3);
    int value = 10;
    fill(li.begin(), li.end(), value);
     
    // Printing theList
    for (int x : li)
        cout << x << " ";
 
    return 0;
}

Output

10 10 10

Different Ways to Initialize a List in C++ STL

Prerequisite: List in C++

Lists are sequence containers that allow non-contiguous memory allocation The following are the different ways to create and initialize a List in C++ STL.

Initializing an empty List and pushing values one by one
Specifying List size and initializing all values
Initializing List like the arrays
Initializing a list from an array
Initializing a list from a vector
Initializing a list from another List
Initializing the List using the fill() function
Using a lambda expression and the generate() function:

Initializing the List using the fill() function

C++

Different Ways to Initialize a List in C++ STL

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