View Compilation Error

0_0_17531826_31181.cpp:5:3: error: stray '\243' in program
   while(scanf("%d",&n)！=EOF）
   ^
0_0_17531826_31181.cpp:5:3: error: stray '\241' in program
0_0_17531826_31181.cpp:5:3: error: stray '\243' in program
0_0_17531826_31181.cpp:5:3: error: stray '\251' in program
0_0_17531826_31181.cpp:11:4: error: missing terminating " character
    scanf("%d,&a);
    ^
0_0_17531826_31181.cpp: In function 'int main()':
0_0_17531826_31181.cpp:4:6: error: expected unqualified-id before ',' token
   int,n,i,sum;
      ^
0_0_17531826_31181.cpp:5:25: error: lvalue required as left operand of assignment
   while(scanf("%d",&n)！=EOF）
                         ^
0_0_17531826_31181.cpp:6:3: error: expected ')' before '{' token
   {
   ^
0_0_17531826_31181.cpp:12:3: error: expected primary-expression before 'if'
   if(a%2==1)
   ^