Compilare: user.c: In function ‘main’: user.c:12:23: warning: unused variable ‘i’ [-Wunused-variable] int k=-1, len1, len2, i; ^ user.c:12:17: warning: unused variable ‘len2’ [-Wunused-variable] int k=-1, len1, len2, i; ^ user.c:12:11: warning: unused variable ‘len1’ [-Wunused-variable] int k=-1, len1, len2, i; ^ user.c:17:7: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(file1, "%s", forbiddenWord); ^