Compilare: user.c: In function ‘main’: user.c:6:31: warning: unused variable ‘nr2’ [-Wunused-variable] int r,d,ct=0,i,x,nr,nr1,j,nr2,p,y; ^ user.c:6:29: warning: unused variable ‘j’ [-Wunused-variable] int r,d,ct=0,i,x,nr,nr1,j,nr2,p,y; ^ user.c:6:25: warning: unused variable ‘nr1’ [-Wunused-variable] int r,d,ct=0,i,x,nr,nr1,j,nr2,p,y; ^ user.c:6:13: warning: variable ‘ct’ set but not used [-Wunused-but-set-variable] int r,d,ct=0,i,x,nr,nr1,j,nr2,p,y; ^ user.c:7:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("pascal.in","r",stdin); ^ user.c:8:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("pascal.out","w",stdout); ^ user.c:9:10: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&r,&d); ^