An introduction to debugging C and Java

learn how to give variables clear names in C and Java by replacing x, y, a, and d with meaningful terms like heights, weights, and BMI using find and replace.

Apply the dry rule to reduce repeat code with a for loop or a function, lowering copy-paste mistakes, saving time, and increasing flexibility in C and Java.

Learn how a for loop eliminates repeated code by initializing a counter, applying a condition, and incrementing each iteration to print values and simplify BMI printing logic.

Discover how and where to add comments in C, using single-line // and multi-line /* */ styles, to explain design choices, document version info, and improve code readability without overcommenting.

Learn why keeping functions under 10 lines improves readability, with a practical example that splits a long function into three parts, highlighting testing and debugging benefits.

Learn to compile C programs with a compiler such as GCC or klong in a terminal, specify source file and output, and enable debugging and warnings with -g and -Wall.

Install lldb on Mac using Homebrew, explain the challenges and differences versus other debuggers, and offer a web-based debugging option as an alternative.

Install mingw-w64 as the Windows package manager and install gcc and gdb from SourceForge. Update the system PATH to include the mingw bin folder and verify the installation.

Discover how to debug C programs online using onlinegdb.com, including compiling, running, and stepping with breakpoints, local variables, and watch expressions in your browser. Compare this online workflow to traditional IDEs, noting limitations for large multi-file projects and recommending desktop tools for bigger programs while still using online debugging for quick checks.

Learn the essential gdb commands to debug programs in C and Java, including breakpoints, run, continue, step, and print for local variables, arrays, and pointers.

Master how to use gdb commands like next, step, quit, list, and watch to navigate code, manage breakpoints, and efficiently debug broken programs.

Learn to debug c and java programs with GDP to identify infinite loops and inspect variables like count and carry on to fix initialization and loop structure.

Debug a segmentation fault in a C program by tracing memory misuse with gdb breakpoints and fix it by allocating string space or using malloc or realloc.

Debug a C program that multiplies a numbers array to produce products and hits overflow with large values. Fix by switching to a larger data type and using gdb breakpoints.

Explore using JDB as an alternative to Eclipse for debugging Java from the terminal, with installation tips, basic commands, and trade-offs with Eclipse's ease and features.

Install Java development kit and Eclipse on Mac or Windows, then set up a workspace and create a Java project with a main class to run.

Add watchpoints in Eclipse to track the global variable x with the outline view and pencil icon, and observe the debugger pausing at each access or write of x.

Set exception breakpoints to pause the program just before a pointer exception is thrown, and inspect variables and vitals; optionally add a generic exception breakpoint for broader monitoring.

Track variables and expressions in Eclipse to debug Java programs by setting breakpoints, stepping through code, and observing how x and y change, including expressions like x*y.

Explore debugging techniques in C and Java by examining a countdown example, using conditional breakpoints and break statements in a switch case to isolate and fix a default case behavior.