Borderou de evaluare (job #111161)

Compilare: user.c: In function ‘main’: user.c:26:13: warning: array subscript has type ‘char’ [-Wchar-subscripts] user.c:28:13: warning: array subscript has type ‘char’ [-Wchar-subscripts] user.c:6:15: warning: unused variable ‘r’ [-Wunused-variable] user.c:6:11: warning: unused variable ‘b’ [-Wunused-variable] user.c:6:9: warning: unused variable ‘a’ [-Wunused-variable] user.c:11:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result]