View Compilation Error

0_0_22348608_21798.cpp:10:4: error: stray '\243' in program
    n--；
    ^
0_0_22348608_21798.cpp:10:4: error: stray '\273' in program
0_0_22348608_21798.cpp: In function 'int main()':
0_0_22348608_21798.cpp:11:4: error: expected ';' before 'scanf'
    scanf("%d",&a)
    ^
0_0_22348608_21798.cpp:14:3: error: expected ';' before '}' token
   }
   ^