Compilare: user.cpp: In function ‘int main()’: user.cpp:17:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("hashtag.out", "w", stdout); ^ user.cpp:18:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d\n", &n, &m); ^ user.cpp:19:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for (j = 0; j < m; ++ j) Sum[j] = n; ^ user.cpp:25:20: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] if (s[j] == '#') ^ user.cpp:11:20: warning: ‘q4’ may be used uninitialized in this function [-Wmaybe-uninitialized] return 1; ^ user.cpp:16:69: note: ‘q4’ was declared here freopen("hashtag.in", "r", stdin); ^ user.cpp:11:11: warning: ‘q3’ may be used uninitialized in this function [-Wmaybe-uninitialized] return 1; ^ user.cpp:16:65: note: ‘q3’ was declared here freopen("hashtag.in", "r", stdin); ^ user.cpp:11:20: warning: ‘q2’ may be used uninitialized in this function [-Wmaybe-uninitialized] return 1; ^ user.cpp:16:61: note: ‘q2’ was declared here freopen("hashtag.in", "r", stdin); ^ user.cpp:11:11: warning: ‘q1’ may be used uninitialized in this function [-Wmaybe-uninitialized] return 1; ^ user.cpp:16:57: note: ‘q1’ was declared here freopen("hashtag.in", "r", stdin); ^ user.cpp:11:20: warning: ‘p4’ may be used uninitialized in this function [-Wmaybe-uninitialized] return 1; ^ user.cpp:16:53: note: ‘p4’ was declared here freopen("hashtag.in", "r", stdin); ^ user.cpp:11:11: warning: ‘p3’ may be used uninitialized in this function [-Wmaybe-uninitialized] return 1; ^ user.cpp:16:49: note: ‘p3’ was declared here freopen("hashtag.in", "r", stdin); ^ user.cpp:11:20: warning: ‘p2’ may be used uninitialized in this function [-Wmaybe-uninitialized]