How to Remove Element at a Specific Index from a List in C++ - Step by Step Examples

How to Remove Element at a Specific Index from a List in C++ ?

Answer

To remove an element at a specific index from a list in C++ using `std::list`, you can use the `std::advance` function in combination with the `std::list::iterator`.

✐ Examples

1 Remove Element at Specific Index

In this example,

We create a list named myList with some elements.
We declare an iterator named it and advance it to the desired index using the std::advance function.
We use the erase method of the list to remove the element at the iterator position.
Finally, we print the modified list to standard output.

C++ Program

#include <iostream>
#include <list>
#include <iterator>

int main() {
  std::list<int> myList = {1, 2, 3, 4, 5};
  int index = 2;
  auto it = myList.begin();
  std::advance(it, index);
  myList.erase(it);
  for (auto& element : myList) {
    std::cout << element << " ";
  }
  return 0;
}

Output

1 2 4 5

2 Remove Element at Last Index

In this example,

We create a list named myList with some elements.
We use the pop_back method of the list to remove the element at the last index.
Finally, we print the modified list to standard output.

C++ Program

#include <iostream>
#include <list>

int main() {
  std::list<int> myList = {1, 2, 3, 4, 5};
  myList.pop_back();
  for (auto& element : myList) {
    std::cout << element << " ";
  }
  return 0;
}

Output

1 2 3 4

Summary

In this tutorial, we learned How to Remove Element at a Specific Index from a List in C++ language with well detailed examples.

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How to Remove Element at a Specific Index from a List in C++ - Step by Step Examples

How to Remove Element at a Specific Index from a List in C++ ?

Answer

✐ Examples

1 Remove Element at Specific Index

C++ Program

Output

2 Remove Element at Last Index

C++ Program

Output

Summary

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