View Compilation Error

0_0_24392404_23954.cpp:6:1: error: stray '\243' in program
 while(scanf("%d %d",&a,&b)！=EOF）
 ^
0_0_24392404_23954.cpp:6:1: error: stray '\241' in program
0_0_24392404_23954.cpp:6:1: error: stray '\243' in program
0_0_24392404_23954.cpp:6:1: error: stray '\251' in program
0_0_24392404_23954.cpp: In function 'int main()':
0_0_24392404_23954.cpp:6:29: error: lvalue required as left operand of assignment
 while(scanf("%d %d",&a,&b)！=EOF）
                             ^
0_0_24392404_23954.cpp:7:1: error: expected ')' before '{' token
 {if(a!=0&&b!=0)
 ^