Compilare: user.cpp: In function 'int main()': user.cpp:61: warning: format '%hu' expects type 'short unsigned int*', but argument 2 has type 'int*' user.cpp:61: warning: format '%hu' expects type 'short unsigned int*', but argument 3 has type 'int*' user.cpp:61: warning: format '%hu' expects type 'short unsigned int*', but argument 4 has type 'int*' user.cpp:56: warning: unused variable 'a' user.cpp:56: warning: unused variable 'b' /tmp/ccSaVZf0.o: In function `main': user.cpp:(.text+0xed): warning: the `gets' function is dangerous and should not be used.