Compilare: user.c: In function ‘main’: user.c:20:30: warning: unused variable ‘m’ [-Wunused-variable] int p,n,cnt=0,ok=1,i,l,r,m; ^ user.c:20:28: warning: unused variable ‘r’ [-Wunused-variable] int p,n,cnt=0,ok=1,i,l,r,m; ^ user.c:20:26: warning: unused variable ‘l’ [-Wunused-variable] int p,n,cnt=0,ok=1,i,l,r,m; ^ user.c:20:24: warning: unused variable ‘i’ [-Wunused-variable] int p,n,cnt=0,ok=1,i,l,r,m; ^ user.c:20:19: warning: unused variable ‘ok’ [-Wunused-variable] int p,n,cnt=0,ok=1,i,l,r,m; ^ user.c:20:13: warning: unused variable ‘cnt’ [-Wunused-variable] int p,n,cnt=0,ok=1,i,l,r,m; ^ user.c:20:11: warning: unused variable ‘n’ [-Wunused-variable] int p,n,cnt=0,ok=1,i,l,r,m; ^ user.c:21:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&p); ^