a = 10; for( i=1; i<=3; i++ ) a -= 1;
a = 10; for ( i=0; i<=3; i++ ) a -= i;
a = 2; for ( i=0; i<=2; i++ ) a += i;
a = 4; for ( i=1; i<=2; i++ ) a += a;
for ( i=2; i>=0; i-- ) printf("%d", i);
printf ( "%d", 4 ); for ( i=2; i>=2; i-- ) printf ( "%d", 2*i );
printf ( "%d", i ); for ( i=3; i<=4; i++ ) printf ( "%d", i );