Compilare: user.cpp: In function ‘int numar(int, int)’: user.cpp:24:9: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] s[y]=NULL; ^ user.cpp: In function ‘int main()’: user.cpp:113:18: warning: format ‘%s’ expects argument of type ‘char*’, but argument 2 has type ‘char (*)[100001]’ [-Wformat=] scanf("%s",&s); ^ user.cpp: In function ‘int ev(nod*)’: user.cpp:96:1: warning: control reaches end of non-void function [-Wreturn-type] } ^