Compilare: user.cpp: In function ‘void citire(int&, int&)’: user.cpp:9: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:11: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:14: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘void fill(int, int, int)’: user.cpp:34: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp: In function ‘void lee()’: user.cpp:48: warning: unused variable ‘j’ user.cpp: In function ‘void afisare()’: user.cpp:72: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result