Compiler error C2548

'class::member' : missing default parameter for parameter parameter

The default parameter list is missing a parameter. If you supply a default parameter anywhere in a parameter list, you must define default parameters for all subsequent parameters in the current declaration or any previous declarations within the same scope.

Example

The following sample generates C2548 for:

• func1 because it's missing the default argument b.
• func3 because it's missing the default argument c.

The following sample doesn't generate C2548 for:

• func2 because all the required default arguments are supplied.
• The second func4 declaration because the default argument c is supplied in the preceding declaration and is in the same scope.
• The third func4 declaration because both default arguments b and c are provided previously.

// C2548.cpp
// compile with: /c
void func1(int a = 1, int b, int c = 3);   // C2548

void func2(int a = 1, int b = 2, int c = 3);   // OK

void func3(int a, int b = 2, int c);   // C2548

void func4(int a, int b, int c = 3);   // OK
void func4(int a, int b = 2, int c);   // OK
void func4(int a = 1, int b, int c);   // OK