Compilare: user.cpp: In function ‘void deschidere()’: user.cpp:26: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:27: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp: In function ‘void parsare()’: user.cpp:31: warning: format ‘%s’ expects type ‘char*’, but argument 2 has type ‘char (*)[100005]’ user.cpp:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘int operatie(int, int, int)’: user.cpp:23: warning: control reaches end of non-void function user.cpp: In function ‘void rezolva()’: user.cpp:58: warning: ‘op’ may be used uninitialized in this function