View Compilation Error

0_0_34935453_20136.cpp:6:3: error: stray '\243' in program
   while(scanf("%d %d",&a,&b)!=-1&&（a!=0||b!=o）)
   ^
0_0_34935453_20136.cpp:6:3: error: stray '\250' in program
0_0_34935453_20136.cpp:6:3: error: stray '\243' in program
0_0_34935453_20136.cpp:6:3: error: stray '\251' in program
0_0_34935453_20136.cpp: In function 'int main()':
0_0_34935453_20136.cpp:5:16: error: 'n' was not declared in this scope
    scanf("%d",&n);
                ^
0_0_34935453_20136.cpp:6:46: error: 'o' was not declared in this scope
   while(scanf("%d %d",&a,&b)!=-1&&（a!=0||b!=o）)
                                              ^