The data types of C++/C

/*The data types of C++/C (C) 2017*/
#include <iostream>
#include <cstdio>
#include <string>

using namespace std;

int main() {
    cout<<"The size of int is: "<<sizeof(int)<<endl;
    cout<<"The size of unsigned int is: "<<sizeof(unsigned int)<< endl;
    cout<<"The size of long long int is: "<< sizeof(long long int)<<endl;
    cout<<"The size of float is: "<<sizeof(float)<<endl;
    cout<<"The size of unsigned char: "<<sizeof(unsigned char)<<endl;
    cout<<"The size of signed int: "<<sizeof(signed int)<<endl;
    cout<<"The size of const int: "<<sizeof(const int)<< endl;
    cout<<"The size of double: "<<sizeof(double)<<endl;
    cout<<"The size of bool: "<<sizeof(bool)<<endl;
    cout<<"The size of long double: "<<sizeof(long double)<<endl;
    cout<<"The size of short int: "<<sizeof(short int)<<endl;
    cout<<"The size of long int: "<<sizeof(long int)<<endl;
    return 0;
}