Compilare: user.cpp: In function ‘int main()’: user.cpp:13:34: warning: format ‘%s’ expects argument of type ‘char*’, but argument 2 has type ‘char (*)[25]’ [-Wformat=] while(scanf("%s",&v[++cate].s)!=EOF){} ^ user.cpp:12:18: warning: variable ‘litera’ set but not used [-Wunused-but-set-variable] int u,lmax=0,litera; ^ user.cpp:9:34: 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:10:36: 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:12:9: warning: ‘u’ may be used uninitialized in this function [-Wmaybe-uninitialized] int u,lmax=0,litera; ^