Compilare: user.cpp: In function ‘int main()’: user.cpp:17:5: warning: ‘char* gets(char*)’ is deprecated [-Wdeprecated-declarations] gets(s + 1); n = strlen(s + 1); ^ In file included from /usr/include/c++/5/cstdio:42:0, from user.cpp:1: /usr/include/stdio.h:638:14: note: declared here extern char *gets (char *__s) __wur __attribute_deprecated__; ^ user.cpp:17:5: warning: ‘char* gets(char*)’ is deprecated [-Wdeprecated-declarations] gets(s + 1); n = strlen(s + 1); ^ In file included from /usr/include/c++/5/cstdio:42:0, from user.cpp:1: /usr/include/stdio.h:638:14: note: declared here extern char *gets (char *__s) __wur __attribute_deprecated__; ^ user.cpp:17:15: warning: ‘char* gets(char*)’ is deprecated [-Wdeprecated-declarations] gets(s + 1); n = strlen(s + 1); ^ In file included from /usr/include/c++/5/cstdio:42:0, from user.cpp:1: /usr/include/stdio.h:638:14: note: declared here extern char *gets (char *__s) __wur __attribute_deprecated__; ^ user.cpp:14:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("smooth2.in", "r", stdin); ^ user.cpp:15:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("smooth2.out", "w", stdout); ^ user.cpp:17:16: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] gets(s + 1); n = strlen(s + 1); ^ user.cpp:16:35: warning: ‘x’ may be used uninitialized in this function [-Wmaybe-uninitialized] int n, best = 100000000, rez, x; ^ /tmp/ccW4Z6g2.o: In function `main': user.cpp:(.text.startup+0x49): warning: the `gets' function is dangerous and should not be used.