C++ Data Type Output the size of each type of variable

#include <cstdio>
#include <cstdlib>
#include <iostream>
using namespace std;

int main(int nNumberofArgs, char* pszArgs[])
{
    bool        b; char  c; int    n; long         l;
    long long  ll; float f; double d; long double ld;

    cout << "sizeof a bool        = " << sizeof b << endl;
    cout << "sizeof a char        = " << sizeof c << endl;
    cout << "sizeof an int        = " << sizeof n << endl;
    cout << "sizeof a long        = " << sizeof l << endl;
    cout << "sizeof a long long   = " << sizeof ll<< endl;
    cout << "sizeof a float       = " << sizeof f << endl;
    cout << "sizeof a double      = " << sizeof d << endl;
    cout << "sizeof a long double = " << sizeof ld<< endl;

    return 0;/*from  w  ww  .ja v  a 2 s .  c o m*/
}