View Compilation Error

0_0_20047796_19377.cpp:3:1: error: expected unqualified-id before 'for'
 for(i=3;i<30;i++)
 ^
0_0_20047796_19377.cpp:3:9: error: 'i' does not name a type
 for(i=3;i<30;i++)
         ^
0_0_20047796_19377.cpp:3:14: error: 'i' does not name a type
 for(i=3;i<30;i++)
              ^