Borderou de evaluare (job #577079)

Eroare de compilare: user.c: In function ‘permute’: user.c:24:5: warning: array subscript has type ‘char’ [-Wchar-subscripts] user.c:28:9: error: ‘for’ loop initial declarations are only allowed in C99 mode user.c:28:9: note: use option -std=c99 or -std=gnu99 to compile your code user.c: In function ‘print_file’: user.c:40:5: error: ‘for’ loop initial declarations are only allowed in C99 mode user.c:43:13: error: ‘for’ loop initial declarations are only allowed in C99 mode user.c: In function ‘main’: user.c:58:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] user.c:65:34: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result]