Compilare: user.cpp: In function ‘void read()’: user.cpp:31:33: warning: format ‘%d’ expects argument of type ‘int*’, but argument 2 has type ‘char*’ [-Wformat=] scanf("%d", &a[i][j]); ^ user.cpp: In function ‘void dfs(coord)’: user.cpp:37:12: warning: variable ‘x’ set but not used [-Wunused-but-set-variable] int k, x = 0; ^ user.cpp: In function ‘void read()’: user.cpp:26:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("padure.in", "r", stdin); ^ user.cpp:27:59: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d %d %d %d", &n, &m, &pl, &pc, &cl, &cc); ^ user.cpp:31:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &a[i][j]); ^ user.cpp: In function ‘void write()’: user.cpp:82:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("padure.out", "w", stdout); ^