Borderou de evaluare (job #62679)

Compilare: user.c: In function ‘main’: user.c:43:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] user.c:44:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] user.c:23:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] user.c:27:19: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] user.c:50:33: warning: ‘b’ may be used uninitialized in this function [-Wuninitialized] user.c:50:33: warning: ‘a’ may be used uninitialized in this function [-Wuninitialized]