Q1: P.234 #16

double num, total=0.0;
int count=0;
double avg;

num = kb.nextDouble();
while(num>=1)
{
	total += num;
	count ++;
	num = kb.nextDouble();
}
avg = total/count;
System.out.println(avg);


Q2: Display "Hi CS112" 100 times. refer P.234 #14.

int count;
for(count=1; count<=100; count++)
	System.out.println("Hi CS112");


Q3: Display all integers from 100 - 200?

int count;
for(count=100; count<=200; count++)
	System.out.println(count);
	
Q4: Sum up all integers from 100 - 200?

int count, sum=0;
for(count=100; count<=200; count++)
	sum += count;

Q5: Display the average of all integers from 100 - 200?

int count, sum=0;
for(count=100; count<=200; count++)
	sum += count;
double avg = (double)sum/101;

System.out.println(avg);

Q6: Sum up all positive inegers from keyboard and stop until a negative number is read.

int num, sum = 0;

num = kb.nextInt();
while( num > 0 )
{
	sum += num;
	num = kb.nextInt();
}


Q6: Sum up all negative inegers from keyboard and stop until a zero is read.


int num, sum = 0;

num = kb.nextInt();
while( num != 0 )
{
	sum += num;
	num = kb.nextInt();
}

Q7: Read both positive and negative numners from key., and sum up both of 
	them until 0 is read.
	
int num, posSum=0, negSum=0;

num = kb.nextInt();
while(num != 0)
{
	if(num > 0)
		posSum += num;
	else
		negSum += num;
	num = kb.nextInt();
}
System.out.println("Pos. Sum = " + posSum);
System.out.println("Neg. Sum = " + negSum);