Why are the long and long double type sizes different between Linux and Windows?

I am learning about computer architecture now. Why the data type sizes are different between Linux and Windows operating systems??

This is my sample C code.

#include<stdio.h>
int main(void)
{
    printf ("\n-- General Data Type Size --\n");
    printf ("char size : %d byte\n", (int)sizeof(char));
    printf ("short size : %d byte\n", (int)sizeof(short));
    printf ("int size : %d byte\n", (int)sizeof(int));
    printf ("long size : %d byte\n", (int)sizeof(long));
    printf ("double size : %d byte\n", (int)sizeof(double));
    printf ("long double size : %d byte\n", (int)sizeof(long double));

    printf ("\n-- Pointer Data Type Size -- \n");
    printf ("char* size : %d byte\n", (int)sizeof(char*));
    printf ("short* size : %d byte\n", (int)sizeof(short*));
    printf ("int* size : %d byte\n", (int)sizeof(int*));
    printf ("long* size : %d byte\n", (int)sizeof(long*));
    printf ("double* size : %d byte\n", (int)sizeof(double*));
    printf ("long double* size : %d byte\n", (int)sizeof(long double*));

    return 0;
} 

when i compiled and run this code on my windwos 10 64bit with visual studio 10, it show like:

then, when i compiled and run this code on my ubuntu 18.04 64bit. it shows like:

The Windows system shows me the size of long double is 8-byte and long is 4-byte.

But Ubuntu shows me the size of long double is 16-byte and long is 8-byte. Why are the two sizes different? Both have 64-bit environments, and I wonder why they have different values. I'd appreciate it if you could explain.