View Compilation Error

0_0_15998632_7688.cpp:7:9: error: stray '\243' in program
         while(scanf("%d", &a）>0）{
         ^
0_0_15998632_7688.cpp:7:9: error: stray '\251' in program
0_0_15998632_7688.cpp:7:9: error: stray '\243' in program
0_0_15998632_7688.cpp:7:9: error: stray '\251' in program
0_0_15998632_7688.cpp: In function 'int main()':
0_0_15998632_7688.cpp:7:35: error: expected ')' before '{' token
         while(scanf("%d", &a）>0）{
                                   ^
0_0_15998632_7688.cpp:13:1: error: expected ')' before '}' token
 }
 ^
0_0_15998632_7688.cpp:13:1: error: expected primary-expression before '}' token