0_0_13064013_30714.c 0_0_13064013_30714.c(20) : error C2065: “k”: 未声明的标识符 0_0_13064013_30714.c(22) : error C2059: 语法错误:“return” 0_0_13064013_30714.c(23) : error C2059: 语法错误:“}”