Borderou de evaluare (job #33290)

Compilare: user.c: In function ‘expr’: user.c:41:5: warning: array subscript has type ‘char’ [-Wchar-subscripts] user.c:45:5: warning: array subscript has type ‘char’ [-Wchar-subscripts] user.c:49:5: warning: array subscript has type ‘char’ [-Wchar-subscripts] user.c:50:5: warning: array subscript has type ‘char’ [-Wchar-subscripts] user.c: In function ‘main’: user.c:65:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] user.c:69:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] user.c:79:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] user.c:82:19: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result]