Compilare: main.c: In function 'has_winning_move': main.c:78:27: warning: suggest parentheses around comparison in operand of '|' [-Wparentheses] if (moves_cache[i]==board|(1<<30)) { ~~~~~~~~~~~~~~^~~~~~~ main.c: In function 'main': main.c:16:3: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf (file, "%d", &n); ^~~~~~~~~~~~~~~~~~~~~~~ main.c: In function 'readboard': main.c:50:7: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf (file, "%d", &number); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~