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 …

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 …

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 …

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.

The sizeof keyword is an operator which measures the amount of memory used by a variable or data type. When a data type is specified it indicates how many bytes are needed to store data …

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 …

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, …

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.

Jul 23, 2025 · The sizeof operator is a compile-time unary operator which can be used to compute the size of its operand. The result of sizeof is of the unsigned integral type which is usually …

In the realm of C programming, the `sizeof` operator is a fundamental and powerful tool. It provides crucial information about the size in bytes of a data type, variable, or an array.