View Compilation Error

0_0_37473536_6441.cpp: In function 'int main()':
0_0_37473536_6441.cpp:33:3: error: 'else' without a previous 'if'
   else if(dw=="GB")
   ^
0_0_37473536_6441.cpp:35:11: error: expected primary-expression before ')' token
   else if()
           ^
0_0_37473536_6441.cpp:36:2: error: expected primary-expression before '}' token
  }
  ^