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How to use gdb in Ubuntu Terminal

Here's a practical, minimal guide for using GDB in Ubuntu terminal — from launching to setting breakpoints and navigating your code. 🧰 Step 1: Compile with Debug Symbols Use -g and disable optimizations ( -O0 preferred for debugging): bash Copy Edit g++ -g -O0 -o myprog myprog.cpp 🚀 Step 2: Launch GDB bash Copy Edit gdb ./myprog You'll see a (gdb) prompt. 🎯 Step 3: Set Breakpoints You can set breakpoints in three main ways : ✅ a. At a function gdb Copy Edit (gdb) break main ✅ b. At a specific file and line gdb Copy Edit (gdb) break myprog.cpp:42 ✅ c. At a method in a class gdb Copy Edit (gdb) break MyClass::doSomething If the symbol is mangled (C++), GDB usually demangles automatically, especially if compiled with -g . ▶️ Step 4: Run the Program gdb Copy Edit (gdb) run 🧭 Step 5: Navigate Command Meaning next or n Step over current line step or s Step into function call finish Run until current function returns continue or c Continue until...
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C vs Cpp notes: gBard ans - more library, documentations for learning available in internet for c vs cpp

 There are more libraries and documentations available for C++ than for C. This is because C++ is a more popular language than C, and it has been around for longer. There are also more developers who use C++, which means that there is more demand for libraries and documentations.

Here are some of the most popular libraries and documentations for C++:

  • The C++ Standard Library is a collection of classes, functions, and objects that are part of the C++ language. It provides a wide range of functionality, including:
    • Input and output
    • Memory management
    • Strings
    • Mathematics
    • Containers
    • Algorithms
  • Boost is a free and open-source library that provides a wide range of additional functionality for C++. It includes libraries for:
    • Numerical analysis
    • Threading
    • GUI development
    • Networking
    • Data compression
  • Qt is a cross-platform framework for GUI development. It provides a wide range of widgets and features, and it is used by many popular applications, such as Firefox and VLC.
  • Google Test is a unit testing framework for C++. It is easy to use and provides a wide range of features, such as:
    • Assertions
    • Fixtures
    • Parameterized tests
  • Doxygen is a documentation generator for C++. It can be used to generate HTML, LaTeX, and other formats from C++ source code.

Here are some of the most popular documentations for C++:

  • The C++ Programming Language by Bjarne Stroustrup is the definitive reference for C++. It covers the entire language, from the basics to the advanced features.
  • The C++ Standard Library by Nicolai Josuttis is a comprehensive guide to the C++ Standard Library. It covers all of the classes, functions, and objects in the library.
  • Effective C++ by Scott Meyers is a collection of tips and techniques for writing better C++ code. It covers a wide range of topics, such as:
    • Memory management
    • Object-oriented programming
    • Generic programming
  • C++ Coding Standards: 101 Rules, Guidelines, and Best Practices by Herb Sutter is a collection of coding standards for C++. It covers a wide range of topics, such as:
    • Naming conventions
    • Style guidelines
    • Error handling

Overall, there are more libraries and documentations available for C++ than for C. This is because C++ is a more popular language than C, and it has been around for longer. There are also more developers who use C++, which means that there is more demand for libraries and documentations.

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