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:26: 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:60: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘void deletePoints(int, punct, double)’: user.cpp:103: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘void afisare()’: user.cpp:141: warning: comparison between signed and unsigned integer expressions user.cpp:136: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:137: warning: ‘y’ may be used uninitialized in this function user.cpp:137: warning: ‘x’ may be used uninitialized in this function