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...
Query: Neon gas is a inert gas. And in tubelight mostly they fill in this gas. But is this gas so much available in earth atmosphere so that it can fill so many tubelights? ChatGPT said: Great question! You're absolutely right— neon is a noble (inert) gas , and it's indeed used in certain types of gas-discharge lighting, especially "neon lights" (the bright red-orange ones you often see in signs). However, neon is not the gas typically used in regular household or office tube lights , like fluorescent lamps. Let's clear up a few points: 1. Which gas is used in tubelights (fluorescent lamps)? In standard tubelights (fluorescent lamps), the tube is usually filled with: Argon gas (or sometimes a mix of argon and a bit of krypton), Plus a small amount of mercury vapor . When electricity excites the mercury vapor, it emits ultraviolet (UV) light , which hits the phosphor coating inside the tube , causing it to glow in visible light. So: Neon is not typ...