Compilare: user.cpp:50:27: warning: no newline at end of file user.cpp:25: warning: ISO C++ forbids declaration of 'main' with no type user.cpp: In function 'int main()': user.cpp:46: warning: format '%c' expects type 'int', but argument 2 has type 'long int' /tmp/ccunvZYf.o: In function `main': user.cpp:(.text+0xe1): warning: the `gets' function is dangerous and should not be used.