How to Iterate Over a List with Index in C++ - Step by Step Examples

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How to Iterate Over a List with Index in C++ ?

Answer

To iterate over a list in C++ using std::list, you can use iterators or range-based for loops.

✐ Examples

1 Iterate Over List with Iterators

In this example,

We include the header for using std::list.
We create a list named numbers with integer elements.
We use iterators to traverse the list and access each element.
Within the loop, we perform operations on each element or print it.

C++ Program

#include <iostream>
#include <list>

int main() {
    std::list<int> numbers = {10, 20, 30, 40, 50};
    for (auto it = numbers.begin(); it != numbers.end(); ++it) {
        std::cout << *it << "\n";
    }
    return 0;
}

Output

2 Iterate Over List with Range-Based for Loop

In this example,

We include the header for using std::list.
We create a list named words with string elements.
We use a range-based for loop to iterate over the list directly.
Within the loop, we perform operations on each element or print it.

C++ Program

#include <iostream>
#include <list>
#include <string>

int main() {
    std::list<std::string> words = {"hello", "world", "from", "C++"};
    for (const auto& word : words) {
        std::cout << word << "\n";
    }
    return 0;
}

Output

hello
world
from
C++

Summary

In this tutorial, we learned How to Iterate Over a List with Index in C++ language with well detailed examples.

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How to Iterate Over a List with Index in C++ - Step by Step Examples

How to Iterate Over a List with Index in C++ ?

Answer

✐ Examples

1 Iterate Over List with Iterators

C++ Program

Output

2 Iterate Over List with Range-Based for Loop

C++ Program

Output

Summary

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