Compilare: user.cpp: In function ‘void citire()’: user.cpp:22: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘void adaugareIntersectie(punct, double)’: user.cpp:63: warning: comparison between signed and unsigned integer expressions user.cpp:62: warning: unused variable ‘xIntersection’ user.cpp:62: warning: unused variable ‘yIntersection’ user.cpp: In function ‘void deletePoints(int, punct, double)’: user.cpp:121: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘void afisare()’: user.cpp:159: warning: comparison between signed and unsigned integer expressions user.cpp:154: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result