View Compilation Error

0_0_21929294_1264.cpp:6:2: error: stray '\243' in program
  int n；
  ^
0_0_21929294_1264.cpp:6:2: error: stray '\273' in program
0_0_21929294_1264.cpp: In function 'int main()':
0_0_21929294_1264.cpp:7:9: error: expected initializer before 'long'
         long long int a[50];
         ^
0_0_21929294_1264.cpp:8:2: error: 'a' was not declared in this scope
  a[1]=3;
  ^
0_0_21929294_1264.cpp:13:13: error: 'n' was not declared in this scope
  while(cin>>n)
             ^