P5.18

and P5.19

-- Business P5.18 Postal bar codes. For faster sorting of letters, the United States Postal Service encour- ages companies that send large volumes of mail to use a bar code denoting the zip code (see Figure 9). The encoding scheme for a five-digit zip code is shown in Figure 10. There are full-height frame bars on each side. The five encoded digits are followed by a check digit, which is computed as follows: Add up all digits, and choose the check digit to make the sum a multiple of 10. For example, the zip code 95014 has a sum of 19, so the check digit is 1 to make the sum equal to 20. Each digit of the zip code, and the check digit , is encoded according to the following table where o denotes a half bar and 1 a full bar. *** ECRLOT ** CO57 Framc bars C057 CODE C671 RTS2 JOHN DOE 1009 FRANKLIN BLVD. SUNNYVALE CA 95014-5143 H., lile lui mull lul Tulll Digit 1 Digit 2 Digit 3 Digit 4 Digic 5 Check Digit Figure 10 Encoding for Five-Digit Bar Codes ILL.I.L... LLLLL...LLLLLL Figure 9 A Postal Bar Code Digit Barl (weight 7) Bar 2 (weight 4) (weight 2) (weight 1) (weight 0) 1 0 0 1 1 o 0 1 1 1 1 5 1 1 66 1 1 7 1 0 0 1 03 1 9 1 0 0 c I 1 0 The digit can be easily computed from the bar code using the column weights 7, 4, 2, 1,0. For example, 01100 is Ox7+ 1 X 4+1x2 + 0x 1 + 0x0=6. The only cxcep- cion is 0, which would yield 11 according to the weight formula. Write a program that asks the user for a zip code and prints the bar code. Use : for half bars, I for full bars. For example, 95014 becomes 11:1:::1:1:||::::::11:1::1:::||| Business P5.19 Write a program that reads in a bar code (with : denoting half bars and denoting full bars) and prints out the zip code it represents. Print an error message if the bar code is not correct