Not valid C++

### Type of issue

Code doesn't work

### Description

Code provided for C++ is not valid C++

### Page URL

https://learn.microsoft.com/en-us/dotnet/api/system.func-2?view=netframework-4.5.2

### Content source URL

https://github.com/dotnet/dotnet-api-docs/blob/main/xml/System/Func`2.xml

### Document Version Independent Id

91a46b70-fa07-92b0-497c-16a833c0b3cb

### Article author

@dotnet-bot