Starting from:
$10

$4

Lab 3 Solution




Write a C program lab3.c that operates as follows. Your program will read an integer number, which should be in the range from 1 to 3999. If the input value is out of range, just print the error message as shown below. Otherwise your program should print the equivalent Roman numeral.

Your program should first separate the input number into four digits using arithmetic operations (such as / and %). Then form the equivalent Roman numeral by printing the corresponding sequences of characters as follows. Digits with value 0 do not produce any characters.




Thousands
Hundreds
Tens
Units
1000
→ M
100→C
10
→ X
1
→ I
2000
→ MM
200 → CC
20
→ XX
2
→ II
3000
→ MMM
300 → CCC
30
→ XXX
3
→ III




400
→ CD
40
→ XL
4
→ IV




500
→ D
50
→ L
5
→ V




600
→ DC
60
→ LX
6
→ VI




700
→ DCC
70
→ LXX
7
→ VII




800
→ DCCC
80
→ LXXX
8
→ VIII




900
→ CM
90
→ XC
9
→ IX



Here are some example inputs and corresponding expected outputs:







-1 → The number -1 is too small




0 → The number 0 is too small




1 → I




10→X




22 → XXII




100→C




203 → CCIII




330 → CCCXXX




444 → CDXLIV




1000 → M




1005 → MV




1050 → ML




2066 → MMLXVI




2500 → MMD




2607 → MMDCVII




3770 → MMMDCCLXX




3888 → MMMDCCCLXXXVIII




3999 → MMMCMXCIX




4000 → The number 4000 is too large




10000 → The number 10000 is too large
















Please carefully read the following requirements:

Try to write the program individually, because you will learn more that way. However, if you get stuck and don’t know how to proceed, you can ask the instructor or a classmate for assistance.



You may demonstrate your program either on your local machine or on the cs-intro.ua.edu server.



Once you believe your program runs correctly using all the above examples, demonstrate your program to the instructor. If the instructor agrees that your program works correctly, you are done.

More products