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007. C++ - Smart Pointers Node

Difficulty: 🟡 Medium
Category: C++ for ROS2
Tags: cpp, smart-pointers, memory, modern-cpp
Execution Type: basic_python

Seen at: Boston Dynamics, NVIDIA
Frequency: medium

💡 Why This Problem Matters

C++ is the standard for performance-critical robotics (drivers, control loops, SLAM). Smart pointers (std::shared_ptr, std::unique_ptr) prevent memory leaks, which is critical for robots that run for weeks without restarting.

Problem Statement

Problem Statement

Create a minimal C++ ROS2 node using modern C++ features like smart pointers (std::shared_ptr).

Requirements

  • Language: C++
  • Create a class inheriting from rclcpp::Node
  • Node name: cpp_smart_node
  • Use RCLCPP_INFO to log "C++ Node Started" in the constructor
  • Ensure standard main function with rclcpp::init, rclcpp::spin, rclcpp::shutdown

Input/Output Format

Output:

  • Console Log: "C++ Node Started"

⚠️ Common Pitfalls

  • Compilation errors due to missing semicolons or headers.
  • Forgetting public inheritance: class MyNode : public rclcpp::Node

📚 Helpful Resources

Test Cases

  • Smart pointers: shared_ptr and unique_ptr used
  • Memory management: No memory leaks
  • Lambda callbacks: Modern C++ syntax

Similar Problems

  • Problem #8

Contributing

Found an issue with this problem's description, or have a better hint?
Open a PR or report it in Discussions.

Note: TestScripts and reference solutions are maintained by the SimuCode team
and are not part of this open spec. This ensures grading integrity on simucode.online.