View Compilation Error

0_0_14562456_19289.cpp: In function 'int main()':
0_0_14562456_19289.cpp:67:15: error: too few arguments to function 'bool ck(int)'
         if(ck()){
               ^
0_0_14562456_19289.cpp:24:6: note: declared here
 bool ck(int i){
      ^