View Compilation Error

0_0_24663414_2666.cpp: In function 'int main()':
0_0_24663414_2666.cpp:18:9: error: unable to find numeric literal operator 'operator""i'
   for(i=0i<n;i++)
         ^
0_0_24663414_2666.cpp:18:9: note: use -std=gnu++11 or -fext-numeric-literals to enable more built-in suffixes
0_0_24663414_2666.cpp:18:17: error: expected ';' before ')' token
   for(i=0i<n;i++)
                 ^