C++ Vector – Iterate using While Loop

In this C++ tutorial, you will learn how to iterate over the elements of a vector using While loop, with example program.

Iterate over elements of vector using While loop in C++

To iterate over the elements of a vector using While Loop, start at zero index and increment the index by one during each iteration. During the iteration, access the element using index.

Example

In the following C++ program, we define a vector, and iterate over its elements using While loop.

main.cpp

#include <iostream>
#include <vector>
using namespace std;

int main() {
    vector<string> arr{ "apple", "banana", "cherry" };
    int index = 0;
    while ( index < arr.size() ) {
        string element = arr.at(index);
        cout << element << endl;
        index++;
    }
}

Output

apple
banana
cherry

Conclusion

In this C++ Tutorial, we learned how to iterate over elements of a vector using While Loop.