Compilare: user.cpp: In function ‘int main()’: user.cpp:11:23: warning: format ‘%s’ expects argument of type ‘char*’, but argument 2 has type ‘char (*)[24]’ [-Wformat=] scanf ("%s", &s[1]); ^ user.cpp:16:30: warning: format ‘%s’ expects argument of type ‘char*’, but argument 2 has type ‘char (*)[24]’ [-Wformat=] scanf ("%s", &s[nr+1]); ^ user.cpp:24:35: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (c[s[i][strlen(s[i])-1]]<x) ^ user.cpp:8:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("text3.in","r",stdin); ^ user.cpp:9:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("text3.out","w",stdout); ^ user.cpp:11:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%s", &s[1]); ^ user.cpp:16:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%s", &s[nr+1]); ^