View Compilation Error

0_0_18601658_7659.cpp: In function 'bool random(int, int)':
0_0_18601658_7659.cpp:23:43: error: too few arguments to function 'bool random(int, int)'
 bool random(int a, int b) { return random() % (a + b) < a; }
                                           ^
0_0_18601658_7659.cpp:23:6: note: declared here
 bool random(int a, int b) { return random() % (a + b) < a; }
      ^