Compilare: user.c: In function ‘main’: user.c:23:25: warning: unused variable ‘x’ [-Wunused-variable] long long prod = 1, x; ^ user.c:23:15: warning: unused variable ‘prod’ [-Wunused-variable] long long prod = 1, x; ^ user.c:22:9: warning: unused variable ‘i’ [-Wunused-variable] int i,n,p; ^ user.c:28:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d %d",&n,&p); ^