View Compilation Error

0_0_30381980_26547.cpp: In function 'int main()':
0_0_30381980_26547.cpp:38:17: error: 'else' without a previous 'if'
                 else
                 ^
0_0_30381980_26547.cpp:44:35: error: 's' was not declared in this scope
         printf("Case #%d: %d\n",w,s);
                                   ^
0_0_30381980_26547.cpp: At global scope:
0_0_30381980_26547.cpp:46:5: error: expected unqualified-id before 'return'
     return 0;
     ^
0_0_30381980_26547.cpp:47:1: error: expected declaration before '}' token
 }
 ^