Compilare: user.cpp: In function 'void write()': user.cpp:24: warning: format '%d' expects type 'int', but argument 2 has type 'long long int' user.cpp: In function 'bool pozitii()': user.cpp:39: warning: array subscript has type 'char' /tmp/ccF8pHeX.o: In function `citire()': user.cpp:(.text+0x2fb): warning: the `gets' function is dangerous and should not be used.