View Compilation Error

0_0_32027857_13940.cpp: In function 'int main()':
0_0_32027857_13940.cpp:28:32: error: 's' was not declared in this scope
   for (int i = 1; i <= n; i++) s
                                ^
0_0_32027857_13940.cpp:28:32: error: expected '}' at end of input
0_0_32027857_13940.cpp:28:32: error: expected '}' at end of input