View Compilation Error

0_0_13473612_26677.cpp: In function 'int check(int)':
0_0_13473612_26677.cpp:99:12: error: 'h' was not declared in this scope
   int down=h[i];
            ^
0_0_13473612_26677.cpp: In function 'int main()':
0_0_13473612_26677.cpp:116:10: error: 'done' was not declared in this scope
   memset(done,0,sizeof(done));
          ^
0_0_13473612_26677.cpp:117:10: error: 'h' was not declared in this scope
   memset(h,0,sizeof(h));
          ^