src.cpp: In function 'node* create(int)':
src.cpp:16:17: error: invalid conversion from 'void*' to 'node*' [-fpermissive]
p1=p2=malloc(LEN);
^
src.cpp:25:18: error: invalid conversion from 'void*' to 'node*' [-fpermissive]
p1=malloc(LEN);
^