View Compilation Error

0_0_14607586_21259.cpp: In function 'void buildtree(int, int, int, int)':
0_0_14607586_21259.cpp:19:22: error: too few arguments to function 'void buildtree(int, int, int, int)'
  buildtree(l,mid,no*2);
                      ^
0_0_14607586_21259.cpp:14:6: note: declared here
 void buildtree(int l,int r,int no,int w){
      ^
0_0_14607586_21259.cpp:20:26: error: too few arguments to function 'void buildtree(int, int, int, int)'
  buildtree(mid+1,r,no*2+1);
                          ^
0_0_14607586_21259.cpp:14:6: note: declared here
 void buildtree(int l,int r,int no,int w){
      ^