C4189

Visual C++ Concepts: Building a C/C++ Program

Compiler Warning (level 4) C4189

Error Message

'identifier' : local variable is initialized but not referenced

A variable is declared and initialized but not used.

The following sample generates C4189:

// C4189.cpp
// compile with: /W4
int main() {
   int a = 1;   // C4189, remove declaration to resolve
}