View Compilation Error

0_0_15130270_21371.c
0_0_15130270_21371.c(6) : error C2065: “t–”: 未声明的标识符
0_0_15130270_21371.c(6) : error C2059: 语法错误:“)”
0_0_15130270_21371.c(12) : error C2065: “n–”: 未声明的标识符
0_0_15130270_21371.c(12) : error C2059: 语法错误:“)”
0_0_15130270_21371.c(16) : error C2059: 语法错误:“return”
0_0_15130270_21371.c(17) : error C2059: 语法错误:“}”