Compilare: user.c: In function ‘main’: user.c:12:18: warning: variable ‘imax’ set but not used [-Wunused-but-set-variable] int i=0,lasti=0,imax=0,imax2=1; for(;i<n;i++)fscanf(f,"%c",&note[i]); ^ user.c:9:8: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d",&n,&m); ^ user.c:11:8: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%c",&note[0]); ^ user.c:12:53: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] int i=0,lasti=0,imax=0,imax2=1; for(;i<n;i++)fscanf(f,"%c",&note[i]); ^ user.c:28:20: warning: ‘max2’ may be used uninitialized in this function [-Wmaybe-uninitialized] } else if(max2<9 && note[i]>max2){ ^