Compilare: user.cpp: In function ‘int cmp(char*, char*)’: user.cpp:15:33: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (ord[a[i]]<ord[b[i]]) return -1; ^ user.cpp:15:43: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (ord[a[i]]<ord[b[i]]) return -1; ^ user.cpp: In function ‘int main()’: user.cpp:57:53: warning: format ‘%s’ expects argument of type ‘char*’, but argument 2 has type ‘char (*)[6]’ [-Wformat=] for (i=1; i<=n; ++i) scanf("%s",&a[i]); ^ user.cpp:75:47: warning: format ‘%s’ expects argument of type ‘char*’, but argument 2 has type ‘char (*)[6]’ [-Wformat=] for (i=1; i<=n; ++i) scanf("%s",&a[i]); ^ user.cpp:45:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("zimeria.in","r",stdin); ^ user.cpp:46:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("zimeria.out","w",stdout); ^ user.cpp:48:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&op); ^ user.cpp:51:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:52:23: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] gets(s); ^ user.cpp:53:23: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] gets(s); ^ user.cpp:57:54: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for (i=1; i<=n; ++i) scanf("%s",&a[i]); ^ user.cpp:69:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:70:17: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] gets(s); ^ user.cpp:71:17: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] gets(s); ^ user.cpp:75:48: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for (i=1; i<=n; ++i) scanf("%s",&a[i]); ^ /tmp/ccuPskWz.o: In function `main': user.cpp:(.text.startup+0x8b): warning: the `gets' function is dangerous and should not be used.