View Compilation Error

0_0_17107420_10830.cpp: In function 'int divide_and_conquer(int, int, int)':
0_0_17107420_10830.cpp:9:36: error: too few arguments to function 'int divide_and_conquer(int, int, int)'
  int t = divide_and_conquer (a, b/2);  
                                    ^
0_0_17107420_10830.cpp:4:5: note: declared here
 int divide_and_conquer (int a, int b,int c)
     ^