View Compilation Error

0_0_27990486_25751.cpp: In function 'void failinit()':
0_0_27990486_25751.cpp:35:8: error: 'start' was not declared in this scope
  while(start<end){
        ^
0_0_27990486_25751.cpp:39:12: error: no pre-increment operator for type
     data[++end]=p->ch[i];
            ^