Read out memory of Data Type

The sizeof operator provides information about the size of a data type in bytes.

#include <iostream>
using namespace std;

int main () {
    
    cout << "size of bool:\t\t" << sizeof(bool) << " Byte / " << sizeof(bool) * 8 << " Bit" << endl;
    cout << "size of char:\t\t" << sizeof(char) << " Byte / " << sizeof(char) * 8 << " Bit" << endl;
    cout << "size of integer:\t" << sizeof(int) << " Byte / " << sizeof(int) * 8 << " Bit" << endl;
    cout << "size of unsigned integer:" << sizeof(unsigned int) << " Byte / " << sizeof(unsigned int) * 8 << " Bit" << endl;
    cout << "size of long integer:\t" << sizeof(long int) << " Byte / " << sizeof(long int)*8 << " Bit" << endl;
    cout << "size of float:\t\t" << sizeof(float) << " Byte / " << sizeof(float) * 8 << " Bit" << endl;
    cout << "size of double:\t\t" << sizeof(double) << " Byte / " << sizeof(double) * 8 << " Bit" << endl;
    cout << "size of long long:\t" << sizeof(long long) << " Byte / " << sizeof(long long) * 8 << " Bit" << endl;
}

Output

size of bool:		1 Byte / 8 Bit
size of char:		1 Byte / 8 Bit
size of integer:	4 Byte / 32 Bit
size of unsigned integer:4 Byte / 32 Bit
size of long integer:	8 Byte / 64 Bit
size of float:		4 Byte / 32 Bit
size of double:		8 Byte / 64 Bit
size of long long:	8 Byte / 64 Bit