Use the Online C GDB compiler to complete this assignment: Online C Compiler - online editor (onlinegdb.com). ⊟ 1. Write a program in " c " to find out a specific bit is set to 1 or 0. 2. Write a program in "c" that counts and returns the bits that set to a 0 or 1 in a 32-bit word (w) 3. Write a program to check if the value of a number (x) is a power of 2 .
gcc - Debugging C code with gdb - Stack Overflow
Good IDE and Compiler for beginners in C?
How many of you actually use GDB from the terminal?
Videos
There are different kinds of errors. Some can be detected by programs (the compiler, the OS, the debugger), and some cannot.
The compiler is required (by the C standard) to issue errors if it detects any constraint violations. It may issue other errors and warnings when not in standards compliance mode. The compiler will give you more error diagnostics if you add the -Wall and -Wextra options. The compiler may be able to detect even more errors if you enable optimizations (-O0 through -O3 set different levels of optimization), but you may want to skip optimizations if you want to single-step in the debugger, because the optimizer will make it harder for the debugger to show you the relevant source-lines (some may be re-ordered, some may be eliminated).
The operating system will detect errors involving traversing bad pointers (usually), or bad arguments to system calls, or (usually) floating-point division by zero.
But anything that doesn't crash the program is a semantic error. And these require a human brain to hunt for them.
So, as Brian says, you need to set breakpoints and single-step through the program. And, as jweyrich says, you need to compile the program with -g to add debugging symbols.
You can inspect variables with print (eg. print Argc will tell you how many command-line arguments were on the run line). And display will add variables to a list that is displayed just before each prompt. If I were debugging through that for-loop in Insert, I'd probably do display J and display Y[J], next, and then hit enter a bunch of times watching the calculation progress.
If your breakpoint is deeply nested, you can get a "stack dump" with backtrace.
next will take you to the next statement (following the semicolon). step will take you into function calls and to the first statement of the function. And remember: if you're single-stepping through a function and get to the 'return' statement, use step to enter the next function call in the calling statement; use next at the return to finish the calling statement (and just execute any remaining function calls in the statement, without prompting). You may not need to know this bit just yet, but if you do, there you go.
From gdb, do break main, then run.
From there, next or step until you find where you went wrong.
Why isn't there any good IDE for C? I tried using Vs-code it's too complicated for beginners to setup and see results I tried CodeBlocks too but it's same as Vs-code,and that being said there are many online compilers like GDB etc that do the work perfectly, then why not something for a pc/desktop?