Compilare: user.cpp: In function ‘int find_parent(clqtree_node*, clqtree_node*)’: user.cpp:111: warning: comparison between signed and unsigned integer expressions user.cpp:124: warning: comparison between signed and unsigned integer expressions user.cpp:109: warning: unused variable ‘y’ user.cpp: In function ‘void df_clqtree(clqtree_node*)’: user.cpp:160: warning: comparison between signed and unsigned integer expressions user.cpp:167: warning: comparison between signed and unsigned integer expressions user.cpp:173: warning: comparison between signed and unsigned integer expressions user.cpp:181: warning: comparison between signed and unsigned integer expressions user.cpp:188: warning: comparison between signed and unsigned integer expressions user.cpp:197: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘int find_max_value(clqtree_node*, int*)’: user.cpp:216: warning: comparison between signed and unsigned integer expressions user.cpp:232: warning: comparison between signed and unsigned integer expressions user.cpp:239: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘void read_data()’: user.cpp:247: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:248: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:250: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:256: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘void write_data(int, int*)’: user.cpp:264: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp: In function ‘int find_max_value(clqtree_node*, int*)’: user.cpp:213: warning: ‘oky’ may be used uninitialized in this function user.cpp: In function ‘clqtree_node* build_clqtree(int, int*)’: user.cpp:135: warning: ‘root’ may be used uninitialized in this function