View Compilation Error

0_0_26136158_4528.c: In function 'is_prime':
0_0_26136158_4528.c:6:23: error: expected expression before '/' token
 int is_prime(int x) { //判断素数
                       ^
0_0_26136158_4528.c:6:23: error: stray '\305' in program
0_0_26136158_4528.c:6:23: error: stray '\320' in program
0_0_26136158_4528.c:6:23: error: stray '\266' in program
0_0_26136158_4528.c:6:23: error: stray '\317' in program
0_0_26136158_4528.c:6:23: error: stray '\313' in program
0_0_26136158_4528.c:6:23: error: stray '\330' in program
0_0_26136158_4528.c:6:23: error: stray '\312' in program
0_0_26136158_4528.c:6:23: error: stray '\375' in program
0_0_26136158_4528.c:8:7: error: 'i' undeclared (first use in this function)
  for (i = 2; i <= x/2; i++)
       ^
0_0_26136158_4528.c:8:7: note: each undeclared identifier is reported only once for each function it appears in