Compilare: user.cpp: In function ‘void citire()’: user.cpp:9: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:10: warning: ignoring return value of ‘int scanf(const char*, ...)’, 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: In function ‘void preproc()’: user.cpp:32: warning: array subscript has type ‘char’ user.cpp:36: warning: array subscript has type ‘char’ user.cpp:38: warning: array subscript has type ‘char’ user.cpp:42: warning: array subscript has type ‘char’ user.cpp: In function ‘void solutie()’: user.cpp:112: warning: array subscript has type ‘char’ user.cpp:112: warning: array subscript has type ‘char’ user.cpp: In function ‘void afisare()’: user.cpp:123: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result