View Compilation Error

0_0_30359731_17014.cpp:25:9: error: array bound is not an integer constant before ']' token
 char s[N];
         ^
0_0_30359731_17014.cpp: In function 'int main()':
0_0_30359731_17014.cpp:31:17: error: 's' was not declared in this scope
     scanf("%s", s + 1);
                 ^