Compilare: user.cpp: In function ‘int main()’: user.cpp:20:24: warning: format ‘%s’ expects argument of type ‘char*’, but argument 2 has type ‘char (*)[21]’ [-Wformat=] while(scanf("%s",&s)!=EOF){ ^ user.cpp:14:34: 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:15:36: 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:16:24: warning: ‘p’ may be used uninitialized in this function [-Wmaybe-uninitialized] int nr=0,a,maxx=-1,p,i; ^