error expected unqualified-id before token struct

Question

I need to make a program that gets a fraction from the user and then simplifies it   I know how to do it and have done most of the code but I keep getting this error  error  expected unqualified-id before         token    I have declared a struct called ReducedForm which holds the simplified numerator and denominator  now what Im trying to do is send the simplified values to this struct  Here is my code   In Rational h    ifndef RATIONAL H  define RATIONAL H  using namespace std   struct ReducedForm       int iSimplifiedNumerator      int iSimplifiedDenominator        I have a class here for the other stuff in the program  endif   In Rational cpp    include  lt iostream gt    include  rational h   using namespace std   void Rational    SetToReducedForm int iNumerator  int iDenominator    int iGreatCommDivisor   0   iGreatCommDivisor   GCD iNumerator  iDenominator      The next 2 lines is where i get the error ReducedForm iSimplifiedNumerator   iNumerator iGreatCommDivisor  ReducedForm iSimplifiedDenominator   iDenominator iGreatCommDivisor

User · Answer

You are trying to access the struct statically with a . instead of ::, nor are its members static. Either instantiate ReducedForm:

ReducedForm rf;
rf.iSimplifiedNumerator = 5;

or change the members to static like this:

struct ReducedForm
{
    static int iSimplifiedNumerator;
    static int iSimplifiedDenominator;
};

In the latter case, you must access the members with :: instead of . I highly doubt however that the latter is what you are going for ;)

User · Answer

ReducedForm is a type  so you cannot say  ReducedForm iSimplifiedNumerator   iNumerator iGreatCommDivisor    You can only use the   operator on an instance   ReducedForm rf  rf iSimplifiedNumerator   iNumerator iGreatCommDivisor

User · Answer

The struct s name is ReducedForm  you need to make an object  instance of the struct or class  and use that  Do this   ReducedForm MyReducedForm  MyReducedForm iSimplifiedNumerator   iNumerator iGreatCommDivisor  MyReducedForm iSimplifiedDenominator   iDenominator iGreatCommDivisor

[c++] error: expected unqualified-id before ‘.’ token //(struct)

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