C++ .front()

The .front() method returns a reference to the first element in the vector, allowing direct access or modification of the element without creating a separate variable or removing it from the vector.

Syntax

vector_name.front();

• vector_name: A placeholder representing the name of the vector on which the .front() method is called.

Note: To use vectors, including the vector library is necessary.

Example

In the example below, .front() is used to print the first element of the numbers vector:

#include <iostream>
#include <vector>

int main() {
  // Initialize a vector with integers
  std::vector<int> numbers = {1, 2, 3, 4};

  // Print the first element of the vector using the .front() method
  std::cout << numbers.front();

  return 0;
}

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The output of the above code is:

1

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Codebyte Example

Run the following codebyte example to understand how the .front works:

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