View Compilation Error

0_0_36946949_7999.cpp:4:2: error: stray '\243' in program
  int a,b，sum;
  ^
0_0_36946949_7999.cpp:4:2: error: stray '\254' in program
0_0_36946949_7999.cpp: In function 'int main()':
0_0_36946949_7999.cpp:4:11: error: expected initializer before 'sum'
  int a,b，sum;
           ^
0_0_36946949_7999.cpp:5:26: error: 'b' was not declared in this scope
  while(scanf("%d,%d",&a,&b)!=EOF)
                          ^