View Compilation Error

0_0_25304584_791.cpp:4:2: error: stray '\243' in program
  scanf("%d %d", &a, &b)；
  ^
0_0_25304584_791.cpp:4:2: error: stray '\273' in program
0_0_25304584_791.cpp: In function 'int main()':
0_0_25304584_791.cpp:5:3: error: expected ';' before 'if'
   if (a - b)
   ^
0_0_25304584_791.cpp:8:5: error: 'else' without a previous 'if'
   } else 
     ^