Compilare: user.cpp:54:2: warning: no newline at end of file user.cpp: In function 'void insert(int, int, int)': user.cpp:18: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'int main()': user.cpp:36: warning: format '%s' expects type 'char*', but argument 3 has type 'char (*)[300]' user.cpp:44: warning: format '%s' expects type 'char*', but argument 3 has type 'char (*)[300]'