Compilare: user.cpp: In function ‘void parantezare()’: user.cpp:14:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<strlen(tmp); i++) ~^~~~~~~~~~~~ user.cpp: In function ‘int main()’: user.cpp:62:5: warning: ‘char* gets(char*)’ is deprecated [-Wdeprecated-declarations] gets(tmp); ^~~~ In file included from /usr/include/c++/6/cstdio:42:0, from /usr/include/c++/6/ext/string_conversions.h:43, from /usr/include/c++/6/bits/basic_string.h:5417, from /usr/include/c++/6/string:52, from /usr/include/c++/6/bits/locale_classes.h:40, from /usr/include/c++/6/bits/ios_base.h:41, from /usr/include/c++/6/ios:42, from /usr/include/c++/6/ostream:38, from /usr/include/c++/6/iostream:39, from user.cpp:1: /usr/include/stdio.h:638:14: note: declared here extern char *gets (char *__s) __wur __attribute_deprecated__; ^~~~ user.cpp:62:13: warning: ‘char* gets(char*)’ is deprecated [-Wdeprecated-declarations] gets(tmp); ^ In file included from /usr/include/c++/6/cstdio:42:0, from /usr/include/c++/6/ext/string_conversions.h:43, from /usr/include/c++/6/bits/basic_string.h:5417, from /usr/include/c++/6/string:52, from /usr/include/c++/6/bits/locale_classes.h:40, from /usr/include/c++/6/bits/ios_base.h:41, from /usr/include/c++/6/ios:42, from /usr/include/c++/6/ostream:38, from /usr/include/c++/6/iostream:39, from user.cpp:1: /usr/include/stdio.h:638:14: note: declared here extern char *gets (char *__s) __wur __attribute_deprecated__; ^~~~ user.cpp:60:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("evaluare.in", "r", stdin); ^ user.cpp:61:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("evaluare.out", "w", stdout); ^ user.cpp:62:14: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] gets(tmp); ^ /tmp/ccitwvq0.o: In function `main': user.cpp:(.text.startup+0x46): warning: the `gets' function is dangerous and should not be used.