View Compilation Error

0_0_19053867_7302.cpp:10:1: error: expected initializer before 'int'
 int nextq[200010];
 ^
0_0_19053867_7302.cpp: In function 'void get_next(int)':
0_0_19053867_7302.cpp:15:2: error: 'nextq' was not declared in this scope
  nextq[0] = -1;
  ^
0_0_19053867_7302.cpp:19:20: error: 'a' was not declared in this scope
   while (k > -1 && a[k + 1] != a[q])
                    ^
0_0_19053867_7302.cpp:21:7: error: 'a' was not declared in this scope
   if (a[k + 1] == a[q])
       ^
0_0_19053867_7302.cpp: In function 'int main()':
0_0_19053867_7302.cpp:34:15: error: 'a' was not declared in this scope
   scanf("%s", a);
               ^
0_0_19053867_7302.cpp:42:9: error: 'nextq' was not declared in this scope
     q = nextq[q];
         ^