View Compilation Error

0_0_28549343_23849.c: In function 'main':
0_0_28549343_23849.c:5:2: error: stray '\243' in program
  while(scanf("%d",&a)！=EOF)
  ^
0_0_28549343_23849.c:5:2: error: stray '\241' in program
0_0_28549343_23849.c:5:24: error: lvalue required as left operand of assignment
  while(scanf("%d",&a)！=EOF)
                        ^