View Compilation Error

0_0_30757579_29466.cpp: In function 'void getnxt()':
0_0_30757579_29466.cpp:11:12: error: 'nxt' was not declared in this scope
     memset(nxt,0,sizeof(nxt));
            ^
0_0_30757579_29466.cpp: In function 'int main()':
0_0_30757579_29466.cpp:36:17: error: 'nxt' was not declared in this scope
         int j=i-nxt[i];
                 ^