Compilare: user.cpp: In function ‘int main()’: user.cpp:18:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 1; i <= n - 1; i ++) ^ user.cpp:20:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int x = 1; x <= n - 1; x++) ^ user.cpp:31:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 1; i <= n && streetsnr > k; i++) ^ user.cpp:34:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j = 1; j <= n; j++) ^ user.cpp:48:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 1; i <= n; i++) ^