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An Objective-C method declaration includes the parameters as part of its name, using colons, like this: - (void)someMethodWithValue:(SomeType)value; As with the return type, the parameter type is specified in parentheses, just like a standard C type-cast.
The function declarator includes the list of parameters that can be passed to the function when it is called by another function, or by itself. In C++, the parameter list of a function is referred to as its signature. The name and signature of a function uniquely identify it.
A function consist of two parts: Declaration: the function's name, return type, and parameters (if any) Definition: the body of the function (code to be executed)
A function declaration tells the compiler about a function name and how to call the function. The actual body of the function can be defined separately. int max(int, int); Function declaration is required when you define a function in one source file and you call that function in another file.
Declaring, implementing and using method like this:
Test.h:
- method:parameter;
Test.m:
- method:parameter{
return nil;
}
Using:
[test method:anObject];
There is no return-type and parameter-type, but it works without any warning or error. Can somebody explain it?
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