Compilare: user.cpp: In function 'int cautare(int)': user.cpp:10: warning: comparison between signed and unsigned integer expressions user.cpp:11: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'int main()': user.cpp:32: warning: format '%d' expects type 'int', but argument 2 has type 'long unsigned int' user.cpp:35: warning: format '%d' expects type 'int', but argument 2 has type 'long unsigned int'