Compilare: user.cpp: In function 'void cata_solve(int*, int*)': user.cpp:111: warning: unused variable 'ng' user.cpp: In function 'int main()': user.cpp:559: warning: name lookup of 'i' changed user.cpp:429: warning: matches this 'i' under ISO standard rules user.cpp:486: warning: matches this 'i' under old rules /tmp/ccxQMbYv.o: In function `main': user.cpp:(.text+0xe7e): warning: the `gets' function is dangerous and should not be used.