/in/foo.cc: In function 'int main()':
/in/foo.cc:22:17: error: expected primary-expression before '=' token
       if(a==x-i)=
                 ^
/in/foo.cc:24:20: error: expected '}' before ';' token
        cout<<b<<"+";
                    ^
/in/foo.cc: At global scope:
/in/foo.cc:31:2: error: expected unqualified-id before 'return'
  return 0;
  ^~~~~~
/in/foo.cc:32:1: error: expected declaration before '}' token
 }
 ^