/in/foo.cc: In function 'int main()':
/in/foo.cc:20:28: error: expected primary-expression before '<' token
                     if(k-x=<0||k-y=<0||k-z=<0||k-x>n||k-y>n||k-z>n);    
                            ^
/in/foo.cc:20:36: error: expected primary-expression before '<' token
                     if(k-x=<0||k-y=<0||k-z=<0||k-x>n||k-y>n||k-z>n);    
                                    ^
/in/foo.cc:20:44: error: expected primary-expression before '<' token
                     if(k-x=<0||k-y=<0||k-z=<0||k-x>n||k-y>n||k-z>n);    
                                            ^
/in/foo.cc:20:21: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
                     if(k-x=<0||k-y=<0||k-z=<0||k-x>n||k-y>n||k-z>n);    
                     ^~
/in/foo.cc:21:7: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
       continue;
       ^~~~~~~~