structs in libraries

hi all;
i trying create library struct. starting out simply, header file has;
class sourcemodes
{
public:
typedef struct
   {
   int maxval;         
   uint8_t scale;            
   uint8_t srcsnk;      
   uint8_t cvcc;      
   }   srcmodes_t;      
};

then constructor in cpp file has;

sourcemodes::sourcemodes (void) {
sourcemodes::srcmodes_t srcmodes;
   srcmodes.maxval = 1023;
   srcmodes.scale = 1;
   srcmodes.srcsnk = 0;
   srcmodes.cvcc = 0;
}

the arduino compiler gives me error on line
sourcemodes::sourcemodes (void) {
sourcemeter.cpp:14: error: definition of implicitly-declared 'sourcemodes::sourcemodes()'
i'm not sure how create class struct, , no methods.
does have idea i'm doing wrong? array of structs includes ints, , strings. maybe that's old school c , if there's better cpp way, i'd try it.
thanks help

you able this:

code: [select]

class sourcemodes
{
public:
typedef struct
   {
   int maxval;         
   uint8_t scale;           
   uint8_t srcsnk;     
   uint8_t cvcc;     
   }   srcmodes_t;     
};

then constructor in cpp file has;

sourcemodes::sourcemodes (void) {
srcmodes_t srcmodes;
   srcmodes.maxval = 1023;
   srcmodes.scale = 1;
   srcmodes.srcsnk = 0;
   srcmodes.cvcc = 0;
}

but not want. struct srcmodes temporary variable defined inside constructor , out of scope constructor returns. want move srcmodes_t srcmodes; class definition srcmodes becomes member variable of class. struct treated class in c++ if struct definition, can new , structs if class definition. default, member in class private unless list under public. default, member in struct public unless list under private.

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