View Compilation Error

0_0_20068693_2257.cpp: In function 'int success(state)':
0_0_20068693_2257.cpp:28:5: error: 'i' was not declared in this scope
  if(i!=3){
     ^
0_0_20068693_2257.cpp: In function 'int main()':
0_0_20068693_2257.cpp:137:31: error: 'memset' was not declared in this scope
   memset(judge,0,sizeof(judge));
                               ^