Compiler error C4430: missing type specifier – int assumed [duplicate]

This is a circular dependency issue. For declaring a pointer to some class, the definition of the class is not needed; i.e. the type doesn’t have to be a complete type. So you don’t need to include A.h in B.h, forward declaration is enough. Such as:

//B.h
class A; // change the include of A.h to forward declaration
class B { 
    A* a;
};

Related Posts:

  1. Resolve build errors due to circular dependency amongst classes
  2. Error “Unterminated conditional directive” in cross-referencing headers
  3. error: expected unqualified-id error: Meaning and fix? [duplicate]
  4. c++ compile error: ISO C++ forbids comparison between pointer and integer
  5. error: redefinition of class
  6. C++ Error: No match for ‘operator=’
  7. Identifier not found error on function call
  8. What is an ‘undeclared identifier’ error and how do I fix it?
  9. Identifier not found error on function call
  10. What is an ‘undeclared identifier’ error and how do I fix it?
  11. C ++ error: a expected initializer before [function name]
  12. invalid new-expression of abstract class type
  13. what does “error : a nonstatic member reference must be relative to a specific object” mean?
  14. “Symbol(s) not found for architecture x86_64” on QtCreator project
  15. error: redefinition of class
  16. C++ error: “Array must be initialized with a brace enclosed initializer”
  17. error: expected primary-expression before ‘)’ token (C)
  18. what does “error : a nonstatic member reference must be relative to a specific object” mean?
  19. C++ #include guards
  20. C++ #include guards
  21. class not declared in scope – even though .h was included
  22. C++ error: definition of implicitly-declared
  23. Already defined in .obj – no double inclusions
  24. cc1plus: error: unrecognized command line option “-std=c++11” with g++
  25. extra qualification error in C++
  26. Cannot open output file, permission denied
  27. Random not declared in scope
  28. Call to non-static member function without an object argument compiler error
  29. What is the difference between a .cpp file and a .h file?
  30. multiple definitions error in c++ and solution to solve this issue
  31. Stray ‘\342’ in C++ program
  32. System not declared in scope?
  33. Error in assignment of member in read-only object
  34. Call of overloaded function is ambiguous
  35. error: ISO C++ forbids in-class initialization of non-const static member
  36. Error: expression cannot be used as a function?
  37. cmath vs math.h (And similar c-prefixed vs .h extension headers)
  38. Unexpected end of file error
  39. virtual memory exhausted: Cannot allocate memory
  40. Eclipse CDT: Symbol ‘cout’ could not be resolved
  41. How many spaces for tab character(\t)?
  42. How do I build a graphical user interface in C++? [closed]
  43. What are the differences between a pointer variable and a reference variable in C++?
  44. outputting ascii table in C++
  45. What is the effect of extern “C” in C++?
  46. finding dll for “The specified module could not be found”
  47. no matching function for call to ‘ ‘
  48. Read file line by line using ifstream in C++
  49. Convert an int to ASCII character
  50. When should I write the keyword ‘inline’ for a function/method?
  51. When does a process get SIGABRT (signal 6)?
  52. Logical XOR operator in C++?
  53. C++ – Decimal to binary converting
  54. Alternative to itoa() for converting integer to string C++?
  55. 1e-9 or -1e9, which one is correct?
  56. “&” meaning after variable type
  57. How can I create objects while adding them into a vector?
  58. What is the printf format specifier for bool?
  59. libpng warning: iCCP: known incorrect sRGB profile
  60. In CLion, header only library: file “does not belong to any project target, code insight features might not work properly”
  61. Is a function definition not allowed here before a ‘{‘ token?
  62. terminate called after throwing an instance of ‘std::out_of_range’
  63. What does “missing template argument” mean?
  64. How do I call the class’s destructor?
  65. Can’t resolve Error: indirection requires pointer operand (‘int’ invalid)
  66. Defining a struct in flex error C++
  67. C++ Postfix calculator using stacks
  68. LNK1168: cannot open debug\file.exe for writing
  69. Can I output a one channel image acquired from camera into a winAppi window?
  70. Difference in make_shared and normal shared_ptr in C++
  71. Printing an array in C++?
  72. error: “initializer expression list treated as compound expression”
  73. The compiler is complaining about my default parameters?
  74. read word by word from file in C++
  75. How to replace all occurrences of a character in string?
  76. Deleting an object in C++
  77. Appending a vector to a vector
  78. C++ Expression must have pointer-to-object type
  79. Multi-character constant warnings
  80. Error: vector does not name a type
  81. How to convert ASCII value into char in C++?
  82. How to alphabetically sort strings?
  83. Function definition not found for a function declared inside unnamed namespace – how to resolve? (Visual Studio 2015)
  84. How do I check if a C++ std::string starts with a certain string, and convert a substring to an int?
  85. Iterator Loop vs index loop
  86. OpenCV Error: Assertion failed (size.width>0 && size.height>0) simple code
  87. operator << must take exactly one argument
  88. Is there a C++ equivalent to getcwd?
  89. expected primary-expression before ‘]’ token
  90. What is the return type of sizeof operator?
  91. C++ 2d char array to string
  92. Error: member function may not be declared outside of its class.
  93. What is the size of sizeof(vector)? C++
  94. C++ – Print Out Objects From Set
  95. Why virtual & static keywords aren’t allowed outside class declaration?
  96. C++ Signed/unsigned mismatch
  97. What does _T stands for in a CString
  98. mysql.h file can’t be found
  99. Getting an error “fopen’: This function or variable may be unsafe.” when compling [duplicate]
  100. The tilde operator in C

Leave a Comment

tech