Compilare: user.cpp: In function ‘int main()’: user.cpp:9:19: warning: format ‘%d’ expects argument of type ‘int*’, but argument 2 has type ‘long unsigned int*’ [-Wformat=] scanf("%d", &n); ^ user.cpp:17:41: warning: format ‘%lu’ expects argument of type ‘long unsigned int’, but argument 3 has type ‘int’ [-Wformat=] printf("%lu %lu %lu", ma[0], 1,1); ^ user.cpp:17:41: warning: format ‘%lu’ expects argument of type ‘long unsigned int’, but argument 4 has type ‘int’ [-Wformat=] user.cpp:6:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("xormax.in", "r", stdin); ^ user.cpp:7:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("xormax.out", "w", stdout); ^ user.cpp:9:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:13:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lu", ma+i); ^