Compiler Warning (level 4) C4100

'identifier' : unreferenced formal parameter

Remarks

The formal parameter is not referenced in the body of the function. The unreferenced parameter is ignored.

C4100 can also be issued when code calls a destructor on an otherwise unreferenced parameter of primitive type.

Example

The following example generates C4100:

// C4100.cpp
// compile with: /W4
void func(int i) {   // C4100, delete the unreferenced parameter to resolve the warning
   // i;   // Or uncomment this line to add a reference
}

int main()
{
   func(1);
}