View Compilation Error

0_0_27658248_4686.c: In function 'get_phi':
0_0_27658248_4686.c:4:27: error: expected declaration specifiers before '/' token
 __int64 get_phi(__int64 x)// 就是公式   
                           ^
0_0_27658248_4686.c:4:27: error: stray '\276' in program
0_0_27658248_4686.c:4:27: error: stray '\315' in program
0_0_27658248_4686.c:4:27: error: stray '\312' in program
0_0_27658248_4686.c:4:27: error: stray '\307' in program
0_0_27658248_4686.c:4:27: error: stray '\271' in program
0_0_27658248_4686.c:4:27: error: stray '\253' in program
0_0_27658248_4686.c:4:27: error: stray '\312' in program
0_0_27658248_4686.c:4:27: error: stray '\275' in program
0_0_27658248_4686.c:17:1: error: expected '=', ',', ';', 'asm' or '__attribute__' before '{' token
 {
 ^
0_0_27658248_4686.c:26:1: error: expected '{' at end of input
 }
 ^