chibrituri.c: In function `main': chibrituri.c:12: warning: `p1' might be used uninitialized in this function chibrituri.c:12: warning: `p2' might be used uninitialized in this function chibrituri.c:12: warning: `p3' might be used uninitialized in this function chibrituri.c:12: warning: `p4' might be used uninitialized in this function chibrituri.c:12: warning: `u1' might be used uninitialized in this function chibrituri.c:12: warning: `u2' might be used uninitialized in this function chibrituri.c:12: warning: `u3' might be used uninitialized in this function chibrituri.c:12: warning: `u4' might be used uninitialized in this function