View Compilation Error

0_0_38417079_2994.cpp: In function 'int main()':
0_0_38417079_2994.cpp:21:19: error: expected ';' before '{' token
   else(!s.empty()){ 
                   ^
0_0_38417079_2994.cpp:39:1: error: expected '}' at end of input
 }
 ^
0_0_38417079_2994.cpp:39:1: error: expected '}' at end of input