Last Half
The last half of the program is nearly the same as the first,
so it is a good idea to check that the first half works before going on.
Here is the completed program:
import java.io.*;
class TestGroups
{
public static void main ( String[] args ) throws IOException
{
String line;
BufferedReader stdin = new BufferedReader(
new InputStreamReader( System.in ) );
int value; // the value of the current integer
// Group "A"
int sizeA; // the number of students in group "A"
int sumA = 0; // the sum of scores for group "A"
System.out.println("How many students in group A:");
line = stdin.readLine();
sizeA = Integer.parseInt( line.trim() );
int count = 0; // initialize count
while ( count < sizeA )
{
System.out.println("Enter a number:");
line = stdin.readLine();
value = Integer.parseInt( line.trim() );
sumA = sumA + value ; // add to the sum
count = count + 1; // increment the count
}
if ( sizeA > 0 )
System.out.println( "Group A average: " + ((double) sumA)/sizeA );
else
System.out.println( "Group A has no students" );
// Group "B"
int sizeB; // the number of students in group "B"
int sumB = 0; // the sum of scores for group "B"
System.out.println("How many students in group B:");
line = stdin.readLine();
sizeB = Integer.parseInt( line.trim() );
count = 0; // initialize count
while ( count < sizeB )
{
System.out.println("Enter a number:");
line = stdin.readLine();
value = Integer.parseInt( line.trim() );
sumB = sumB + value ; // add to the sum
count = count + 1; // increment the count
}
if ( sizeB > 0 )
System.out.println( "Group B average: " + ((double) sumB)/sizeB );
else
System.out.println( "Group B has no students" );
}
}
|
The two halves of the code are very similar.
|