#include <stdio.h>

struct List 
{
   int          value;
   struct List *next;  
};

int main(int argc, char *argv[])
{
   printf("sizeof(int)         = %ld\n", sizeof(int));
   printf("sizeof(double)      = %ld\n", sizeof(double));
   printf("sizeof(struct List) = %ld\n", sizeof(struct List) );
}