Compilare: user.cpp: In function 'void cuplaj()': user.cpp:55: warning: unused variable 'j' user.cpp:55: warning: unused variable 'x' user.cpp:55: warning: unused variable 'y' user.cpp:55: warning: unused variable 'aux' user.cpp: In function 'int main()': user.cpp:84: warning: unused variable 'x' user.cpp: In function 'int cmp(char*, char*)': user.cpp:24: warning: control reaches end of non-void function