### Sign in a local player using C++

Source: https://docs.redpoint.games/eos-online-subsystem

Demonstrates retrieving the platform handle and identity system to perform a player login. Requires a valid world context and appropriate namespace usage.

```cpp
using namespace ::Redpoint::EOS::Core::Utils;  

using namespace ::Redpoint::EOS::Identity;  

  

// Get the handle to the Epic Online Services platform.  

auto PlatformHandle = FWorldResolution::GetPlatformHandle(  

                          this->GetWorld());  

  

// Get the identity system.  

auto Identity = PlatformHandle->GetSystem<IIdentitySystem>();  

  

// Sign the local player in.  

Identity->Login(  

    FLoginRequest(0 /* User slot a.k.a. controller index. */)  

    IIdentitySystem::FOnLoginComplete::CreateSPLambda(  

        this,   

        [this](FError ErrorCode, FIdentityUserPtr NewUser) {  

            if (ErrorCode.WasSuccessful())  

            {  

                // The user is signed in, and NewUser is valid.  

            }  

        }));
```

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