Borderou de evaluare (job #179509)

Compilare: user.c: In function ‘main’: user.c:27:3: warning: spurious trailing ‘%’ in format [-Wformat] user.c:5:19: warning: unused variable ‘cn’ [-Wunused-variable] user.c:9:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] user.c:11:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] user.c:18:6: warning: ‘l’ may be used uninitialized in this function [-Wuninitialized]