| title | Compiler Error C2530 | Microsoft Docs | |||||||||||||
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| ms.date | 11/04/2016 | |||||||||||||
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| ms.topic | error-reference | |||||||||||||
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| ms.assetid | b790a312-48df-4a6a-9e27-be2c5f32f16c | |||||||||||||
| caps.latest.revision | 9 | |||||||||||||
| author | corob-msft | |||||||||||||
| ms.author | corob | |||||||||||||
| manager | ghogen | |||||||||||||
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'identifier' : references must be initialized
You must initialize a reference when it was declared, unless it is declared already:
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With the keyword extern.
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As a member of a class, structure, or union (and it is initialized in the constructor).
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As a parameter in a function declaration or definition.
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As the return type of a function.
The following sample generates C2530:
// C2530.cpp
int main() {
int i = 0;
int &j; // C2530
int &k = i; // OK
}