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Compiler Warnings That Are Off by Default

The compiler includes warnings that are off by default. If a warning is off by default, most users would not want to see it.

A warning that is off by default can be enabled in one of several ways:

#pragma warning(default : warning_number)

The warning is enabled at its default level. Documentation for the warning contains the default level of the warning.

#pragma warning( warning_level : warning_number)

The warning is enabled at the specified level (warning_level).

/Wall

/Wall enables all warnings that are off by default.

The following warnings are off by default:

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