Compilare: user.cpp: In function 'int main()': user.cpp:16: warning: comparison between signed and unsigned integer expressions user.cpp:18: warning: comparison between signed and unsigned integer expressions user.cpp:19: warning: comparison between signed and unsigned integer expressions user.cpp:22: warning: comparison between signed and unsigned integer expressions /tmp/ccqHNHR5.o: In function `main': user.cpp:(.text+0x54): warning: the `gets' function is dangerous and should not be used.