Borderou de evaluare (job #140256)

Compilare: user.c: In function ‘main’: user.c:8:40: warning: unused variable ‘dif’ [-Wunused-variable] user.c:8:37: warning: unused variable ‘b’ [-Wunused-variable] user.c:8:34: warning: unused variable ‘a’ [-Wunused-variable] user.c:12:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] user.c:15:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result]