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Answered 2013-06-07 19:13:30

A declaration is an incomplete type whereas a definition is a complete type.

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There is no difference; to define an object in C++ you use the 'class' definition


There is no difference, other than that declarations in C++ can also initialise the variable in a single instruction. C example: int x; // declaration x=5; // initialisation C++ example: int y=5; // declaration and initialisation combined.


A class is the definition of a type, while an object is an instance of a class.


A class is a type definition. An object is an instance of a class.


//function prototype int myFunction(char a); //function definition int myFunction(char a) { ...//your code }


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Nowadays it is the same thing. Long long time ago the following form was also acceptable as function declaration:FILE *fopen ();Currently it is:FILE *from (const char *, const char *);


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VC++ is Microsoft's implementation of C++.



Everything. Actually, there is no similarity between the two.



You understand a function by looking at its definition. The definition tells you exactly what a function does. The declaration (or the prototype) only tells you how to use the function. In other words, the declaration describes the interface to the function while the definition describes the implementation. In binary libraries where you only have access to the header, the definition may not be available to you (it will be obfuscated within the binary code). In that case you must look up the library documentation in order to understand the function.


The definition of the structure in C is limited to within the module and cannot be initialized outside its scope. Where as in C++ you can initialize the objects anywhere within the boundaries of the project.


There is no such thing as devoid in C++.



// for definition of enumerated type: enum [tag] [: type] {enum-list} [declarator]; // for declaration of variable of type tag: enum tag declarator;


A forward declaration. However forward declarations can only be used when the class is used as a pointer or reference prior to its definition, otherwise it must be defined before it is used. class A; // forward declaration class B { A& data; // reference to class that has yet to be defined }; class A {}; // definition


There are no such things as 'Windows C++' and 'Linux C++'


parts of a programStructure of C++ programDocumentation SectionPreprocessor SectionDefinition SectionGlobal Declaration Sectionmain(){Declaration part;Executable part;}sub program section{Sub program execution part}


There is no difference between photo paper glossy and plus glossy. The main difference in photo paper can be seen between a matte finish and glossy finish.


Both ++you and you++ have the same ending result. The variable you is incremented. The difference is that, if you use the combination in a larger expression, then you++ will have the initial value of you, while ++you has the incremented value of you.


// declaration: return_type function_name([argument_type_1[=value][, argument_type_2[=value][, ...]]]); // definition (function signature must match declaration): return_type function_name([argument_type_1 argument_name_1[, argument_type_2 argument_name_2[, ...]]]) { // implementation } In the case of separate declaration/definition, the definition file must include the file that contains the declaration unless they are both in the same file. If the function is a template function, both the declaration and the definition must be visible to the compiler BEFORE it can be used (thus they must both be in the same file). For all other functions other than inline expanded functions, only the declaration need be visible. Note that the definition is also a declaration, however default values must be omitted and all arguments must be named. The declaration arguments may also be named but they needn't match those in the definition (the definition names are the ones actually used). Alternatively: // combined declaration and definition: return_type function_name([argument_type_1 argument_name_1[=value][, argument_type_2 argument_name_2[=value][, ...]]]) { // implementation } Functions that are defined in the declaration are impicitly inline expanded. Functions that are defined separately must be prepended with the inline keyword in the definition, and the definition must be visible to the compiler BEFORE the function can be used. Functions that do not return a value must return void. If any other return type is specified, the function must explicitly return that type via all return paths. The main function must return an int, however return(0) is implied if not specified in the final statement.


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