View Compilation Error

848381_0_0_19852.c
848381_0_0_19852.c(3) : error C2061: 语法错误 : 标识符“PI”
848381_0_0_19852.c(3) : error C2059: 语法错误 : “;”
848381_0_0_19852.c(3) : error C2059: 语法错误 : “常数”
848381_0_0_19852.c(10) : error C2017: 非法的转义序列
848381_0_0_19852.c(10) : error C2143: 语法错误 : 缺少“;”(在“常数”的前面)
848381_0_0_19852.c(10) : error C2065: “PI” : 未声明的标识符