c2758

data members can be initialized within a class // Int maxnumber1 = 5; // (2) Error c2864: 'mytest: maxnumber2': only static const integral data members can be initialized within a class // Const int maxnumber2 = 5; // (3) Error c2864: 'mytest: maxnumber3': only static const integral data members can be initialized within a class // Static int maxnumber3 = 5; // (4) OK Static const int maxnumber4 = 5; Static const char cconst4 = 'B '; // (5) Error c2864: 'mytest: dconst4': only

/** * */#includeusing namespacestd;nbsp;classmytest{//(1) Error C2864: ' Mytest::maxnumber1 ': only static const integral data, can be initialized within a class /c8>//int MaxNumber1 = 5;nbsp; //(2) Error C2864: ' Mytest::maxnumber2 ': only static const integral data, can be initialized within a class /c0>//const int MaxNumber2 = 5;nbsp; //(3) Error C2864: ' Mytest::maxnumber3 ': only static const integral data, can be initialized within a class /c5>//static int MaxNumber3 = 5;nbsp; //

Const member variable InitializationConst member variables can only be initialized in the class constructor. The following compilation error is reported: // Const. h # include Print () {std: cout Const int cs ;};// Const. cpp # include "const. h" cconst: cconst () {}int main (int argc, char * Argv []) {cconst * a = new cconst (); a-> print (); return 0 ;} Error c2758: 'cs ': must be initialized in constructor Base/member initializer list Change cons

Initialization of const member variablesConst member variables can only be initialized in the constructor of the class, and the following compile an error Const.h#include Print () {std::cout const INT CS;Const.cpp#include "Const.h" Cconst::cconst () {}int main (int argc, char* Argv[]) {cconst* a = new Cconst (); A->print (); return 0;} Compile error Error c2758: ' CS ': Must be initialized in constructor Base/member initializer list Modify the

C ++ Primer: // Constref. cpp: defines console applicationsProgram.// # Include "stdafx. H" Class constref{Public:Constref (int ii ); Int I;Const int ci;Int Ri;}; Constref: constref (int ii){I = II;Ci = II;Ri = I;} // Constref: constref (int ii): I (ii), CI (I), RI (ii ){} Int _ tmain (INT argc, _ tchar * argv []){Constref B (5 ); Printf ("% d, % d, % d", B. I, B. CI, B. RI );Return 0;} In this case, there is an error in writing. Error