View Compilation Error

0_0_26023212_3055.c: In function 'eular':
0_0_26023212_3055.c:3:20: error: expected expression before '/' token
 int eular(int n){  //欧拉函数
                    ^
0_0_26023212_3055.c:3:20: error: stray '\305' in program
0_0_26023212_3055.c:3:20: error: stray '\267' in program
0_0_26023212_3055.c:3:20: error: stray '\300' in program
0_0_26023212_3055.c:3:20: error: stray '\255' in program
0_0_26023212_3055.c:3:20: error: stray '\272' in program
0_0_26023212_3055.c:3:20: error: stray '\257' in program
0_0_26023212_3055.c:3:20: error: stray '\312' in program
0_0_26023212_3055.c:3:20: error: stray '\375' in program
0_0_26023212_3055.c:5:6: error: 'i' undeclared (first use in this function)
  for(i = 2;i*i<=n;i++){
      ^
0_0_26023212_3055.c:5:6: note: each undeclared identifier is reported only once for each function it appears in
0_0_26023212_3055.c:7:9: error: 'ret' undeclared (first use in this function)
    n/=i,ret*=i-1;
         ^