View Compilation Error

0_0_30881694_1828.cpp:2:9: error: expected unqualified-id before 'switch'
         switch(s)
         ^
0_0_30881694_1828.cpp:15:5: error: expected unqualified-id before 'return'
     return 0;
     ^
0_0_30881694_1828.cpp:17:1: error: expected declaration before '}' token
 }
 ^