Compilare: user.c: In function ‘main’: user.c:9:21: warning: unused variable ‘k’ [-Wunused-variable] int n,c,av,i,nr,k; ^ user.c:10:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&n); ^ user.c:13:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&v[i]); ^