How do I debug with gdb/lldb in C++?

Debugging C++ applications can be effectively done using tools like GDB (GNU Debugger) and LLDB. These tools allow developers to inspect the state of a program during its execution, set breakpoints, and step through code to identify and fix bugs.

Using GDB

To debug your C++ program with GDB, follow these steps:

1. Compile your code with debugging information using the `-g` flag:
g++ -g -o my_program my_program.cpp
2. Start GDB with your executable:
gdb my_program
3. Set breakpoints in your code:
(gdb) break main
4. Run the program:
(gdb) run
5. Use commands like `next`, `step`, `print` to navigate through your code and inspect variables.

Using LLDB

LLDB works similarly to GDB. Follow these steps to use LLDB:

1. Compile your C++ program with debugging symbols:
clang++ -g -o my_program my_program.cpp
2. Launch LLDB with your executable:
lldb my_program
3. Set breakpoints:
(lldb) breakpoint set --name main
4. Run the application:
(lldb) run
5. Use commands like `next`, `step`, `print` to navigate and inspect the state of your program.