Compilare: user.cpp: In function 'int insrt(char*)': user.cpp:32: warning: no return statement in function returning non-void user.cpp: In function 'void read()': user.cpp:39: warning: unused variable 'i' user.cpp:39: warning: unused variable 'j' user.cpp:44: warning: unused variable 'nr' user.cpp: In function 'int main()': user.cpp:110: warning: unused variable 'ok' user.cpp:110: warning: unused variable 'h' user.cpp: In function 'int insrt(char*)': user.cpp:32: warning: control reaches end of non-void function /tmp/ccFJsHoE.o: In function `read()': user.cpp:(.text+0x2e): warning: the `gets' function is dangerous and should not be used.