Borderou de evaluare (job #553495)

Compilare: user.c: In function ‘main’: user.c:57:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] user.c:58:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] user.c:59:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] user.c:70:12: warning: ‘sum’ may be used uninitialized in this function [-Wuninitialized]