0_0_5317365_13240.c 0_0_5317365_13240.c(17) : error C2065: "sum" : ??????? 0_0_5317365_13240.c(17) : error C2143: ???? : ??")"(?"}"???) 0_0_5317365_13240.c(21) : fatal error C1004: ?????????