Incorrect Questions (Production)

Content Services Team (Production)

$opt_dummy_attribute

Non-Student Users

Handshake Pilot (Prod)

Anonymous Users

Pro Lite GTM (Production)

Admin Users

Optimizely Test Users

Billing Update Modal (Production)

Author Users

Anon and Registered Users, Excluding CFB Users

Free Users

Non-India Users

Optimizely-Generated Audience for Backwards Compatibility

student

anonymous

admin

optimizely_test_user

author

free

Looking for an introduction to the theory behind programming? Master Python while learning data structures, algorithms, and more!

Computer Science

Learn C++ — a versatile programming language that’s important for developing software, games, databases, and more.

Learn C++

Returns the number of elements in the stack.


The **`.size()`** method returns the number of elements in the `stack`.

## Syntax

The `.size()` method is called on a `stack` using the following syntax:

```pseudo
stackName.size();
```

## Codebyte Example

The following example uses the `.size()` method on `myStack`:

```codebyte/cpp
#include <iostream>
#include <stack>
#include <string>

int main() {
  std::stack<std::string> myStack;

  myStack.push("A");
  myStack.push("B");
  myStack.push("C");
  myStack.push("D");

  std::cout << myStack.size() << '\n';

  myStack.pop();
  myStack.pop();

  std::cout << myStack.size() << '\n';

  while (!myStack.empty()) {
    myStack.pop();
  }

  std::cout << myStack.size() << '\n';
}
```


.size()

Syntax

Codebyte Example

Contributors

Learn C++ on Codecademy

Computer Science

Learn C++

Contributors

Resources

Support

Resources

Support

Plans

Community

Subjects

Languages

Career building

Mobile

Mobile