Compilare: user.c: In function ‘parity’: user.c:7:14: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] return 1 - a&1; ^ user.c: In function ‘main’: user.c:21:7: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(file1, "%lld", &A); ^ user.c:22:7: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(file1, "%lld", &B); ^