View Compilation Error

0_0_28193277_12623.cpp: In function 'int main()':
0_0_28193277_12623.cpp:7:22: error: expected primary-expression before '.' token
   for(i=2;i*i<=n;i++).
                      ^
0_0_28193277_12623.cpp:8:3: error: expected unqualified-id before '{' token
   {
   ^