View Compilation Error

0_0_27407064_6594.cpp
0_0_27407064_6594.cpp(75) : error C2065: “num”: 未声明的标识符
0_0_27407064_6594.cpp(79) : error C2059: 语法错误:“return”
0_0_27407064_6594.cpp(80) : error C2059: 语法错误:“}”
0_0_27407064_6594.cpp(80) : error C2143: 语法错误 : 缺少“;”(在“}”的前面)