what is the difference between inline function and preprocessor macro?
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The basic difference between inline and macro is that an inline functions are parsed by the compiler whereas, the macros in a program are expanded by preprocessor. The keyword used to define an inline function is “inline” whereas, the keyword used to define a macro is “#define“.
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Compared to display: inline, the major difference is that inline-block allows to set a width and height on the element. Also, with display: inline, top and bottom margins & paddings are not respected, and with display: inline-block they are.
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1 Answer. You should never expect them outperform assignments. The reason is, the compiler will use memcpy anyway when it thinks it would be faster (if you use optimize flags). ... The default is -mno-memcpy, which allows GCC to inline most constant-sized copies.
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The keyword `ifdef simply tells the compiler to include the piece of code until the next `else or `endif if the given macro called FLAG is defined using a `define directive.
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The four ways to pass a pointer to a function in C++
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The C library Macro NULL is the value of a null pointer constant. It may be defined as ((void*)0), 0 or 0L depending on the compiler vendor.
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The difference is that a . h file can (and usually will) be #include d into multiple compilation units ( . ... c file, and you want to use it from other . c files, a declaration of that function needs to be available in each of those other .
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To the compiler, there is no difference between the two declarations. ... For example, both of the following statements declare only one pointer. int* ptr, foo, bar; int *ptr, foo, bar; This statement declares multiple pointers, which prevents using the "int*" spacing.
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Inline table valued function refers to a TVF where the function body just contains one line of select statement. ... Multi-statement table valued function refers to a TVF where it has a return table variable. Inside the function body, there will be statements populating this table variable.
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Function and Subroutine are used interchangeably in Visual Basic but they have a difference. The main difference between Function and Procedure is that Function is a procedure that performs a certain task and returns a value to the calling code while a procedure is a block of executable statements in the program.
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#ifdef means if defined. If the symbol following #ifdef is defined, either using #define in prior source code or using a compiler command-line argument, the text up to the enclosing #endif is included by the preprocessor and therefore compiled.
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There is no difference. You could type it as int * i if you wanted; they all mean the same thing: "i is a pointer to an int." It's the same thing. Some developers prefer the int* i notation because this way the type of i is clearly "pointer to an int" whereas int *i seems less readable.
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The arguments are the inputs required by the function and are enclosed in parentheses. Arguments surrounded by square brackets are optional. For example, the VLOOKUP argument; 'range_lookup', is optional. In some cases, if you omit optional arguments Excel will apply a default.
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Two of the most widely used types are the std_logic and std_ulogic . The difference between them is that the former is resolved, while the latter isn't.
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Procedural programming (PP), also known as inline programming takes a top-down approach. It is about writing a list of instructions to tell the computer what to do step by step. It relies on procedures or routines. ... Functional programming (FP) is about passing data from function to function to function to get a result.
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Compile-time is the instance where the code you entered is converted to executable while Run-time is the instance where the executable is running. ... They wont let your program to execute a single line until you remove all the syntax errors or until you debug the compile time errors.
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In Fortran, functions and subroutines are different: the former returns a value while the latter does not. Functions are simpler than subroutines. A function can only return one variable, and can be invoked from within expressions, like a write statement, inside an if declaration if (function) then , etc.