Compilare: user.cpp: In function ‘long long unsigned int cmmmcplural()’: user.cpp:28:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=3;i<=m;i++) ^ user.cpp: In function ‘void afis()’: user.cpp:35:9: warning: unused variable ‘i’ [-Wunused-variable] int i; ^ user.cpp: In function ‘void Back(int)’: user.cpp:55:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (k>m) afis(); ^ user.cpp:58:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=1;i<=K;i++) ^ user.cpp: In function ‘int main()’: user.cpp:71:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=1;i<=K;i++) ^ user.cpp:75:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=1;i<=K;i++) ^