#include <iostream>#include <string>using namespace std;class MyClass { private: int x; int y; int z; int a; int b; int c; int d; public: MyClass( int nx, int ny, int nz ) { x = nx; y = ny; z = nz; }};int main( int argc, char** argv ) { int x = 4; long y = 40000000000L; MyClass mc = MyClass(3, 6, 9); cout << "x is " << sizeof(x) << " bytes long." << endl; cout << "y is " << sizeof(y) << " bytes long." << endl; cout << "mc is " << sizeof(mc) << " bytes long." << endl; return 0;}//OUTPUT: //x is 4 bytes long.//y is 8 bytes long.//mc is 28 bytes long.