上機考試參考
說明: input 表示執行程式時輸入的畫面, output 表示輸出畫面, 其中 input
中沒有粗體+底線的字為提示字串, 粗體+底線為 user 輸入的資料
C: 30  C: 為提示字串, 30 為 user 輸入的資料
1. Write a program that converts centigrade temperatures to Fahrenheit
temperatures. The formula is F = 9/5C + 32 where F is the Fahrenheit temperature
and C is the centigrade temperature. (to round off the F, for example, F = 80.3 
F = 80, F = 80.6  F = 81)
input
C: 30
C: 27
output
F = 86
F = 81
2. Write a program that can be used as a math tutor for a young student. The
teacher can enter two integers n1 and n2, and the student can enter the result of
n1+n2. This program should display the correct solution if the student enters a
incorrect answer.
input
output
Teacher:
n1: 30
n2: 40
Student:
30 + 40 = ? 70
Teacher:
n1: 30
n2: 40
Student:
30 + 40 = ? 80
Correct
Wrong
30 + 40 = 70
3. Write a program that asks the user to enter a number within the range of 1
through 10. Use a switch statement to display the Roman numeral version of that
number.
input
output
Input a number (1~10): 4
Input a number (1~10): 8
IV
XIII
4. A company sells a package that retails for $100. Quantity discounts are given
according to the following table.
Quantity
Discount
10-19
20%
20-49
30%
50-99
40%
100+
50%
5. Write a program that asks for the number of units sold and computes the total
cost of the purchase.
input
output
Units: 4
units: 55
Cost: $400
Cost: $3300
6. The following table shows the approximate speed of sound, measured in feet per
second, in air, water, and steel.
Medium
Speed
(feet/sec)
Air
1,100
Water
4,900
Steel
16,400
7. Write a program that displays a menu allowing the user to select air, water, or
steel. After the user has made a selection, the number of feet a sound wave will
travel in the selected medium should be enter. The program will then display the
amount of time it will take.
input
output
Select a medium:
1. Air
2. Water
Select a medium:
4. Air
5. Water
3. Steel
Your choice: ? 1
Enter the feet:? 10000
6. Steel
Your choice: ? 3
Enter the feet:? 10000
Travel Time: 9.09091 sec
Travel Time: 0.609756 sec
8. Write a program that asks the user for the speed of vehicle (in km per hour) and
how many hours it has traveled. It should then use a loop to display the total
distance traveled at the end of each hour of that time period.
input
output
Speed of the vehicle? 40
Hours that it traveled? 3
Speed of the vehicle? 60
Hours that it traveled? 4
Time: 1 hr/Distance: 40 km
Time: 2 hr/Distance: 80 km
Time: 3 hr/Distance: 120 km
Time: 1 hr/Distance: 60 km
Time: 2 hr/Distance: 120 km
Time: 3 hr/Distance: 180 km
Time: 4 hr/Distance: 240 km
9. Write a program with a loop that user enter a series of integers, followed by -99
to signal the end of the series. After all the numbers have been entered, the
program should display the largest and smallest numbers entered.
input
output
enter a series of integers (enter -99 to break):
20
40
10
30
-99
Largest number: 40
Smallest number: 10
10. Write a program to solve the Towers of Hanoi problem. Use a recursive function
with four parameters: Move(int n, char peg1, char peg2, char peg3), n: the
number of disks to be moved, peg1: the peg on which these disks are initially
threaded, peg2: the peg to which this stack of disks is to be moved, peg3: the peg
to be used as a temporary holding area.
input
output
enter the number of disks: 3
A  C (this means move one disk from peg A to peg C)
AB
CB
AC
BA
BC
AC
11. The greatest common divisor of integers x and y is the largest integer that evenly
divides both x and y. Write a recursive function gcd(int x, int y) that returns the
greatest common divisor of x and y. (if x = 0, then gcd(x,y) is y; if y = 0, then
gcd(x,y) is x).
input
output
enter the two integers: 8 12
enter the two integers: 24 18
gcd(8,12) = 4
gcd(24,18) = 6
12. Use recursive to write a program that asks the user to enter an integer n, displays
the following pattern on the screen. (cannot have any for, while, do-while in
program)
input
output
n: 3
n: 4
*
**
***
*
**
***
****
13. Use for-statement to write a program that asks the user to enter an integer n,
displays the following pattern on the screen.
input
output
n: 3
n: 4
*
**
***
*
**
***
****
14. Write a function Distance(int x1, int y1, int x2, int y2) that calculates the distance
between points (x1, y1) and (x2, y2). The return values should be the type
double.
input
output
enter the two points (x1,y1), (x2,y2): 10 15 20 25
Distance of (10,15) and (20,25): 14.1421
15. Write a function Uppercase() that capitalizes the English letter of the string.
input
output
enter a string: hello world !
HELLO WORLD !