Compilare: user.cpp: In function ‘void solve()’: user.cpp:74:22: warning: unused variable ‘p’ [-Wunused-variable] int i, t, t2, r, p, indbagat = 1, indscos = 1, x, y; ^ user.cpp: In function ‘void read_data()’: user.cpp:100:18: warning: unused variable ‘j’ [-Wunused-variable] int i, x, y, j, ind; ^ user.cpp: In function ‘int main()’: user.cpp:135:9: warning: variable ‘start’ set but not used [-Wunused-but-set-variable] int start, end; ^ user.cpp:135:16: warning: variable ‘end’ set but not used [-Wunused-but-set-variable] int start, end; ^ user.cpp: In function ‘void read_data()’: user.cpp:103:43: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d %d\n", &N, &M, &W, &H); ^ user.cpp:107:49: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(sir, 1024, stdin), ind = x = y = 0; ^ user.cpp:116:49: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(sir, 1024, stdin), ind = x = y = 0; ^ user.cpp: In function ‘int main()’: user.cpp:132:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ograzi.in", "rt", stdin); ^ user.cpp:133:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ograzi.out", "wt", stdout); ^