Compilare: user.cpp: In function ‘int main()’: user.cpp:20:7: warning: narrowing conversion of ‘x’ from ‘int’ to ‘char’ inside { } [-Wnarrowing] p = {x, y, 0}; ^ user.cpp:20:7: warning: narrowing conversion of ‘y’ from ‘int’ to ‘char’ inside { } [-Wnarrowing] user.cpp:11:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("domino1.in", "r", stdin); ^ user.cpp:12:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("domino1.out", "w", stdout); ^ user.cpp:14:32: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &n, &k1, &k2); ^ user.cpp:19:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &x, &y); ^