Compilare: user.cpp: In function ‘int main()’: user.cpp:31:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:33:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &v[i]); ^ user.cpp:61:32: warning: ‘p’ may be used uninitialized in this function [-Wmaybe-uninitialized] printf("%d %d\n", n - p, last); ^