Compilare: user.cpp: In function 'int main()': user.cpp:55: warning: format '%c' expects type 'int', but argument 2 has type 'long int' user.cpp:71: warning: format '%ld' expects type 'long int', but argument 3 has type 'int' user.cpp:77: warning: format '%ld' expects type 'long int', but argument 3 has type 'int' /tmp/ccrrxDot.o: In function `main': user.cpp:(.text+0xad): warning: the `gets' function is dangerous and should not be used.