Compilare: main.cpp: In function 'int main()': main.cpp:50:23: warning: narrowing conversion of 'a' from 'int' to 'char' inside { } [-Wnarrowing] e [i] = {a , b}; ^ main.cpp:50:23: warning: narrowing conversion of 'b' from 'int' to 'char' inside { } [-Wnarrowing] main.cpp:40:40: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("domino.in" , "r" , stdin); ^ main.cpp:42:22: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf ("%d" , &n); ^ main.cpp:47:33: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf ("%d%d" , &a , &b); ^