#include <stdio.h>

int main(void)
{
    int g = 476789;
    char *ptr = (char *)&g;
    int r = *ptr + 1;
    
    printf("r = %d, g = %d, ptr = %p\n", r,g,ptr); 
    
    r = (*ptr)++;
    printf("r = %d, g = %d, ptr = %p\n", r,g,ptr); 
    
}