View Compilation Error

0_0_20197074_31496.c: In function 'main':
0_0_20197074_31496.c:49:34: error: expected expression before '/' token
  while(scanf("%d", &t) != EOF)   // 输入n
                                  ^
0_0_20197074_31496.c:49:34: error: stray '\312' in program
0_0_20197074_31496.c:49:34: error: stray '\344' in program
0_0_20197074_31496.c:49:34: error: stray '\310' in program
0_0_20197074_31496.c:49:34: error: stray '\353' in program