pre_pointer.cpp

#include <array>
#include <string>
#include <iostream>
using namespace std;

void test_int( int *ptr ) { cout << "An int takes " << sizeof(*ptr) << " bytes but a pointer to one takes " << sizeof(ptr) << " bytes" << endl; }
void test_uint( unsigned int *ptr ) { cout << "An unsigned int takes " << sizeof(*ptr) << " bytes but a pointer to one takes " << sizeof(ptr) << " bytes" << endl; }
void test_short( short *ptr ) { cout << "A short takes " << sizeof(*ptr) << " bytes but a pointer to one takes " << sizeof(ptr) << " bytes" << endl; }
void test_char( char *ptr ) { cout << "A char takes " << sizeof(*ptr) << " bytes but a pointer to one takes " << sizeof(ptr) << " bytes" << endl; }
void test_float( float *ptr ) { cout << "A float takes " << sizeof(*ptr) << " bytes but a pointer to one takes " << sizeof(ptr) << " bytes" << endl; }
void test_double( double *ptr ) { cout << "A double takes " << sizeof(*ptr) << " bytes but a pointer to one takes " << sizeof(ptr) << " bytes" << endl; }
void test_string( string *ptr ) { cout << "A string takes " << sizeof(*ptr) << " bytes but a pointer to one takes " << sizeof(ptr) << " bytes" << endl; }
void test_array( array<int,10> *ptr ) { cout << "An array of 10 elements takes " << sizeof(*ptr) << " bytes but a pointer to one takes " << sizeof(ptr) << " bytes" << endl; }

int main()
{
    int myInt = 1;
    unsigned int myUInt = 2;
    short myShort = 3;
    char myChar = 'A';
    float myFloat = 1.23;
    double myDouble = 2.31;
    string myString = "hello";
    array<int,10> myArray {1,2,3,4,5,6,7,8,9,10};

    test_int( /*COMPLETE ME, I NEED A POINTER*/ );
    test_uint( /*COMPLETE ME, I NEED A POINTER*/ );
    test_short( /*COMPLETE ME, I NEED A POINTER*/ );
    test_char( /*COMPLETE ME, I NEED A POINTER*/ );
    test_float( /*COMPLETE ME, I NEED A POINTER*/ );
    test_double( /*COMPLETE ME, I NEED A POINTER*/ );
    test_string( /*COMPLETE ME, I NEED A POINTER*/ );
    test_array( /*COMPLETE ME, I NEED A POINTER*/ );

    return 0;
}