The sizeof Operator - C++ Operator

Introduction

sizeof operator gets the number of bytes occupied by a type, or by a variable.

Here are some examples of its use:

Demo Code

#include <iostream>

int main()/*from  w w  w. j  a v a  2s.c om*/
{
    int height {74};
    std::cout << "The height variable occupies " << sizeof height << " bytes." << std::endl;
    std::cout << "Type \"long long\" occupies " << sizeof (long long) << " bytes." << std::endl;
    std::cout << "The expression height*height/2 occupies "
              << sizeof (height*height/2) << " bytes." << std::endl;
}

Result

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Related Tutorials

• Sizeof operator used on an array name returns the number of bytes in the array.
• Demonstrating the sizeof operator on various data types
• Use sizeof operator to determine the sizes in bytes of the various data types on your computer system.
• C++ Logical Operators
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