Compilare: user.cpp: In function ‘void Lee()’: user.cpp:46:18: warning: unused variable ‘d1’ [-Wunused-variable] int i, j, d, d1, p, q; ^ user.cpp:46:22: warning: unused variable ‘p’ [-Wunused-variable] int i, j, d, d1, p, q; ^ user.cpp:46:25: warning: unused variable ‘q’ [-Wunused-variable] int i, j, d, d1, p, q; ^ user.cpp: In function ‘int main()’: user.cpp:25:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("castel.in", "r", stdin); ^ user.cpp:26:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("castel.out", "w", stdout); ^ user.cpp:30:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf( "%d%d%d", &N, &M, &K ); ^ user.cpp:33:36: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf( "%d", &a[i][j] ); ^