Oct 17, 2025 · sizeof () operator is a very useful tool that helps programmers understand how much memory a variable or data type occupies in the computer's memory. It is a compile-time …

Dec 29, 2024 · When applied to an expression, sizeof does not evaluate the expression (i.e. the expression is an unevaluated operand)(since C++11), and even if the expression designates a …

Aug 3, 2021 · The sizeof operator gives the amount of storage, in bytes, required to store an object of the type of the operand. This operator allows you to avoid specifying machine …

To actually get the size (in bytes) of a data type or variable, use the sizeof operator: Note that we use the %zu format specifier to print the result, instead of %d. This is because the compiler …

sizeof is a unary operator in the C and C++ programming languages that evaluates to the storage size of an expression or a data type, measured in units sized as char.

Feb 8, 2025 · The sizeof operator is a compile-time unary operator in C that returns the size in bytes of its operand. It calculates the memory space required to store a data type or variable, …

Jan 26, 2016 · 2 The sizeof operator yields the size (in bytes) of its operand, which may be an expression or the parenthesized name of a type. The size is determined from the type of the …

Dec 26, 2024 · In order to determine the size of data types on a particular machine, C++ provides an operator named sizeof. The sizeof operator is a unary operator that takes either a type or a …

Dec 3, 2024 · Returns a constant of type std::size_t. Returns the number of elements in a pack. This page was last modified on 3 December 2024, at 23:11.

Learn everything about the sizeof operator in C with easy explanations, examples, best practices, and common pitfalls.