Compilare: user.c: In function ‘main’: user.c:10:11: warning: unused variable ‘j’ [-Wunused-variable] int n,j,s=0,i; ^ user.c:12:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d", &n); ^ user.c:16:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d", &v[i]); ^