View Compilation Error

0_0_28158122_8834.cpp:1:9: error: expected unqualified-id before 'if'
         if(i + p[i] == 2 * len + 2)
         ^
0_0_28158122_8834.cpp:3:9: error: expected unqualified-id before 'if'
         if(i - p[i] == 0)
         ^
0_0_28158122_8834.cpp:5:5: error: expected declaration before '}' token
     }
     ^