low-level question

I couldn't get this on a midterm. Darn!

Anyone want to help?

1. Why does the following program output a 0?
2. Explain in detail.
3. How could you prevent this outcome without changing the code?


#include <stdio.h>
#include <string.h>

int
main( int argc, char *argv[] )
{
int ii = 1;
char buf[ 4 ];

strcpy( buf, "AAAA" );

printf( "%d\n", ii );

return 0;
}

.

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