Error directive

 

C++

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C++ language

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Preprocessor

#if #ifdef #ifndef #else #elif #endif

#define #undef #,## operators

#include

#warning

#error

#pragma

#line

 

Shows given message and renders program ill-formed.

Syntax

#error error_message

Explanation

After encountering #error directive, diagnostic message error_message is shown and the program is rendered ill-formed (the compilation is stopped).

error_message can consist of several words not necessarily in quotes.

See also

• warning directive