Compilare: user.cpp: In function ‘void citire_sir(char*)’: user.cpp:87:14: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] gets(sir); ^ user.cpp: In function ‘void citire()’: user.cpp:100:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("apel.in","r",stdin); ^ user.cpp:101:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("apel.out","w",stdout); ^ user.cpp:102:15: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] gets(apel); ^ In file included from /usr/include/stdio.h:934:0, from /usr/include/c++/4.8/cstdio:42, from user.cpp:1: In function ‘char* gets(char*)’, inlined from ‘void citire_sir(char*)’ at user.cpp:87:14: /usr/include/i386-linux-gnu/bits/stdio2.h:230:28: warning: call to ‘__gets_warn’ declared with attribute warning: please use fgets or getline instead, gets can't specify buffer size [enabled by default] return __gets_warn (__str); ^ /tmp/ccE1eP5S.o: In function `citire_sir(char*)': user.cpp:(.text+0x1b): warning: the `gets' function is dangerous and should not be used. /tmp/ccE1eP5S.o: In function `citire()': user.cpp:(.text+0x71): warning: the `gets' function is dangerous and should not be used.