Assignment #2 - 93B
# Assignment #2 - 93B

#2 93 A
Course: 308 208
T.A : Silas Rahhal
ID : HYJF
Due : .........
SOCIAL INSDURANCE NUMBER VALIDATION PROGRAM
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Write a 'C' program to validate the accuracy of any Social
Insurance Number (SIN). ( or to impress others by guessing the
last digit, given the first eight digits ).
The Social Insurance Number contains nine digits. ( the first
eight digits are assigned, while the ninth is constructed from
the first eight, and therefore acts as a check-digit).
Ex: SIN = 1 9 3 4 5 6 7 8 7
1st 2nd 3rd 4th 5th 6th 7th 8th check-digit
Steps: ( High Level Specifications ).
______________________________
(1) Construct a 4 digit number from the 2nd, 4th, 6th and 8th
digit of the SIN. ie. 9 4 6 8
(2) Multiply the constructed digit in step (1) by two.
ie. 9 4 6 8 * 2 = 1 8 9 3 6
(3) Cross add all the resulting digits of step (2).
ie. 1+8+9+3+6 = 27
(4) Construct a 4 digit number from the 1st, 3rd, 5th and 7th
digit of the SIN ie. 1 3 5 7
(5) Cross add all the resulting digits of step (4).
ie. 1+3+5+7 = 16
(6) Add the results of step (3) and (5) together.
ie. 27 + 16 = 43
(7) If the result of step (6) is a multiple of 10 then
the check digit is 0
Otherwise the check is 10 - MOD(results of step (6) , 10 )
ie. 10 - MOD(43,10) = 7
Test you program on the following SIN numbers:
111111111
222222222
333333333
444444444
555555555
666666666
777777777
888888888
999999999
205446651
193456787
your own number (optional)
3 more numbers (be creative)...
Requirements:
1) use of array(s).
2) use of loop(s).
3) nicely formatted output, with message and correct check digit, as
below.
S.I.N Message Correct Check-Digit
_________ _______ ___________________
111111111 Wrong SIN 8
222222222 Wrong SIN 6
333333333 Wrong SIN 4
444444444 Wrong SIN 2
555555555 Wrong SIN 6
666666666 Wrong SIN 4
777777777 Wrong SIN 2
888888888 Wrong SIN 0
999999999 Wrong SIN 8
205446651 Correct SIN 1
193456787 Correct SIN 7
your own number (optional)
3 more numbers (be creative)...
your program should prompt the user for a Social Insurance Number,
validate it, and print the Message as above, with the Correct
Check-Digit.
You may need to convert the characters enterd by the user, into
integer using the "atoi" function.
Your program should loop until the user enters a special character
as a social insurance number.
NOTE: We assume that if the Check-Digit is correct, then the SIN is
a valid number.
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