Compilare: user.cpp: In function ‘void task2()’: user.cpp:55:40: warning: format ‘%d’ expects argument of type ‘int*’, but argument 2 has type ‘bool*’ [-Wformat=] scanf("%d", &a[(i - 1) * m + j]); ^ user.cpp:50:15: warning: unused variable ‘r’ [-Wunused-variable] int i, j, r, d; ^ user.cpp:50:18: warning: unused variable ‘d’ [-Wunused-variable] int i, j, r, d; ^ user.cpp: In function ‘void write()’: user.cpp:109:13: warning: unused variable ‘ak’ [-Wunused-variable] int ak = 47; ^ user.cpp: In function ‘void read()’: user.cpp:18:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("casa.in", "r", stdin); ^ user.cpp:19:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &p); ^ user.cpp: In function ‘void task1()’: user.cpp:25:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n", &nr); ^ user.cpp:29:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %c\n", &r, &d); ^ user.cpp: In function ‘void task2()’: user.cpp:51:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &n, &m); ^ user.cpp:55:41: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &a[(i - 1) * m + j]); ^ user.cpp: In function ‘void write()’: user.cpp:72:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("casa.out", "w", stdout); ^