C++ Example – Check the Size of int, float, double, and char Variables

C++ Example – Check the Size of int, float, double, and char Variables | Tutorial

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C++ Example - Check the Size of int, float, double, and char Variables

C++ Example

Use the C++ sizeof operator to calculate the space occupied by int, float, double, and char variables.

sizeof operator syntax:

sizeof(dataType);

Note: The results may vary on different systems.

Example

#include<iostream>
using namespace std;

int main()
{
    cout << "char: " << sizeof(char) << " bytes" << endl;
    cout << "int: " << sizeof(int) << " bytes" << endl;
    cout << "float: " << sizeof(float) << " bytes" << endl;
    cout << "double: " << sizeof(double) << " bytes" << endl;

    return 0;
}

The output of the above program is:

char: 1 bytes
int: 4 bytes
float: 4 bytes
double: 8 bytes

C++ Example