Demonstrating the sizeof operator on various data types - C++ Operator

Description

Demonstrating the sizeof operator on various data types

Demo Code

#include <iostream> 
using namespace std; 

int main() /* w w  w .j av  a2 s  . c o m*/
{ 
    char c; // variable of type char 
    short s; // variable of type short 
    int i; // variable of type int 
    long l; // variable of type long 
    float f; // variable of type float 
    double d; // variable of type double 
    long double ld; // variable of type long double 
    int array[ 20 ]; // array of int 
    int *ptr = array; // variable of type int * 

    cout << "sizeof c = " << sizeof c 
        << "\tsizeof(char) = " << sizeof( char ) 
        << "\nsizeof s = " << sizeof s 
        << "\tsizeof(short) = " << sizeof( short ) 
        << "\nsizeof i = " << sizeof i 
        << "\tsizeof(int) = " << sizeof( int ) 
        << "\nsizeof l = " << sizeof l 
        << "\tsizeof(long) = " << sizeof( long ) 
        << "\nsizeof f = " << sizeof f 
        << "\tsizeof(float) = " << sizeof( float ) 
        << "\nsizeof d = " << sizeof d 
        << "\tsizeof(double) = " << sizeof( double ) 
        << "\nsizeof ld = " << sizeof ld 
        << "\tsizeof(long double) = " << sizeof( long double ) 
        << "\nsizeof array = " << sizeof array 
        << "\nsizeof ptr = " << sizeof ptr << endl; 
}

Result

• Previous
• Next

Related Tutorials

• Output the size of each type of variable
• To know the size in bytes of floating point variables for your computer.
• Sizeof operator used on an array name returns the number of bytes in the array.
• Use sizeof operator to determine the sizes in bytes of the various data types on your computer system.
• The sizeof Operator