Compilare: user.cpp: In function ‘int main()’: user.cpp:25:5: warning: ‘char* gets(char*)’ is deprecated [-Wdeprecated-declarations] gets(s1); n = strlen(s1); ^ In file included from /usr/include/c++/5/cstdio:42:0, from /usr/include/x86_64-linux-gnu/c++/5/bits/stdc++.h:46, from user.cpp:1: /usr/include/stdio.h:638:14: note: declared here extern char *gets (char *__s) __wur __attribute_deprecated__; ^ user.cpp:25:5: warning: ‘char* gets(char*)’ is deprecated [-Wdeprecated-declarations] gets(s1); n = strlen(s1); ^ In file included from /usr/include/c++/5/cstdio:42:0, from /usr/include/x86_64-linux-gnu/c++/5/bits/stdc++.h:46, from user.cpp:1: /usr/include/stdio.h:638:14: note: declared here extern char *gets (char *__s) __wur __attribute_deprecated__; ^ user.cpp:25:12: warning: ‘char* gets(char*)’ is deprecated [-Wdeprecated-declarations] gets(s1); n = strlen(s1); ^ In file included from /usr/include/c++/5/cstdio:42:0, from /usr/include/x86_64-linux-gnu/c++/5/bits/stdc++.h:46, from user.cpp:1: /usr/include/stdio.h:638:14: note: declared here extern char *gets (char *__s) __wur __attribute_deprecated__; ^ user.cpp:26:5: warning: ‘char* gets(char*)’ is deprecated [-Wdeprecated-declarations] gets(s2); m = strlen(s2); ^ In file included from /usr/include/c++/5/cstdio:42:0, from /usr/include/x86_64-linux-gnu/c++/5/bits/stdc++.h:46, from user.cpp:1: /usr/include/stdio.h:638:14: note: declared here extern char *gets (char *__s) __wur __attribute_deprecated__; ^ user.cpp:26:5: warning: ‘char* gets(char*)’ is deprecated [-Wdeprecated-declarations] gets(s2); m = strlen(s2); ^ In file included from /usr/include/c++/5/cstdio:42:0, from /usr/include/x86_64-linux-gnu/c++/5/bits/stdc++.h:46, from user.cpp:1: /usr/include/stdio.h:638:14: note: declared here extern char *gets (char *__s) __wur __attribute_deprecated__; ^ user.cpp:26:12: warning: ‘char* gets(char*)’ is deprecated [-Wdeprecated-declarations] gets(s2); m = strlen(s2); ^ In file included from /usr/include/c++/5/cstdio:42:0,