#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
int main (int argc, char *argv[])
{
double a = 1.1;
double b = 2.2;
void * A = (void *) &a;
void * B = (void *) &b;
ptrdiff_t s = (A - B);
printf ("differenza: %i\n", s
); return 0;
}
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