Compilare: user.cpp: In function ‘int main()’: user.cpp:10:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("split.in", "r", stdin); ^ user.cpp:11:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("split.out", "w", stdout); ^ user.cpp:14:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d", &n); ^ user.cpp:19:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d", &v[i]); ^ user.cpp:43:13: warning: ‘jj’ may be used uninitialized in this function [-Wmaybe-uninitialized] --jj; ^ user.cpp:57:42: warning: ‘p1’ may be used uninitialized in this function [-Wmaybe-uninitialized] if (ma2 > ma || (ma2 == ma && jj < p1)) ma = ma2, p1 = jj, p2 = i, p3 = qq; ^