Compiler warning flags

-O0, -O1, -O2, -O3 are the compiler flags.
These are the different optimization flags that you can supply to the compiler in order to optimize your code.
By default, the compiler uses no optimization.
That means the optimization level is zero.
How do I get all the GCC warnings?
If you need a full list of GCC warning options, for a specific version of GCC that you have, you can run GCC with gcc --help=warnings to get that list..
What compiler flag is used to enable the display of warnings?
gcc -Wall enables all compiler's warning messages.
This option should always be used, in order to generate better code..
What do compiler flags do?
Compile-time flags are boolean values provided through the compiler via a macro method.
They allow to conditionally include or exclude code based on compile time conditions.
There are several default flags provided by the compiler with information about compiler options and the target platform..
What is compiler flags?
Compiler flags are options you give to gcc when it compiles a file or set of files.
You may provide these directly on the command line, or your development tools may generate them when they invoke gcc..

In C++, the warning is issued when an explicit specialization of a primary template declared with attribute alloc_align , alloc_size , assume_aligned , format ,

Warnings are diagnostic messages that report constructions that are not inherently erroneous but that are risky or suggest there may have been an error. The

Compiler warning flags

How do I get all the GCC warnings?

What compiler flag is used to enable the display of warnings?

What do compiler flags do?

What is compiler flags?