Java Reference

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the Java console.

E3
. Write a procedure that prints the sum, difference, and product of its two

double
parameters.

E4.
Write a function that returns
"Hooray"
if one of its three arguments is less

than
10
and returns
“Booo”
otherwise.

E5.
Write a procedure that prints
"Hooray"
in the Java console if one of its

three arguments is less than
10
and prints
"Booo"
otherwise.

E6.
Write a function that computes the area of a circle, given its radius
r
. The

formula for the area is π
r
2
. You can get π using
Math.PI
.

E7.
Write a procedure that prints the area of a circle, given its radius
r
. The for-

mula for the area is π
r
2
. You can get π using
Math.PI
.

E8.
Write a function that, given the number of gallons of gas a tank can hold and

the fuel efficiency of the car (miles per gallon), calculates how far the car can go

on one tank of gas.

E9.
Write a procedure that, given the number of gallons of gas a tank can hold

and the fuel efficiency of the car (miles per gallon), prints how far the car can go

on one tank of gas.

E10.
Write a procedure with three parameters that prints, on separate lines of the

Java console, the smallest parameter, then the middle one, and finally the largest.

E11.
Write a function that converts its parameter from miles to kilometers. One

mile equals 1.60935 kilometers. Use type
double
.

E12.
Write a procedure that converts its parameter from kilometers to miles and

prints the result. One mile equals 1.60935 kilometers. Use type
double
.

E13.
Write a function that converts its parameter from pounds to kilograms. One

pound equals 0.45359237 kilograms. Use type
double
.

E14.
Write a procedure that converts its parameter from pounds to kilograms

and prints the result. One pound equals 0.45359237 kilograms. Use type
double
.

E15.
Write a function that is given as parameters the number of hours, minutes,

and seconds of a time on a particular day and yields the total number of seconds

that the time represents.

E16.
Write a function that is given an integer in the range 0..999999 and returns

it as a String, with a comma separating the last three digits from the first ones.

Of course, include the comma only if the number is at least 1000. For example,

for argument
1546
, the returned value is
"1,546"
, and for argument
34
, the

returned value is
"34"
.

E17.
Write a procedure that is given a dollar amount and prints out how many

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