Programming $lnC$

Lab $6$B$/7$B

Objective

To gain experience in the use of pointers, structures, and dynamic memory allocation, multiple file program,

input$/$output redirection.

Assignment

Write a program to input names and addresses that are in alphabetic order and output the names and

addresses in zip code order. You could assume maximum of $50$ names.

The program should be modalized and well documented. You must:

Use a structure for names and address information

Allocate storage dynamically for each structure $($dynamic memory allocation$)$

Use input$/$output redirection

Use an array of pointers to structures; Do NOT use an array of structures

Use multiple file format; header file, multiple $.$c files

Sort the zip codes in ascending order

Use the data file assigned

You may use any functions in this lab. No global variables.

Input

Data file contains $4$ records $($lines$)$ for each name and address as follows:

First line: Lastname, Firstname

Second line: Street address

Third line: $,$ City and State

Fourth line: Zipcode

Output

The names and addresses in zip code order with the above format.

Run

Run the program with the input file assigned. Run the program on the command line using input$/$output

redirection:

$>$ Lab$6$b$7$b$.$exe $$ lab$6$b$7$b$\_$input.txt $>$ lab$6$b$7$b$\_$output.txt

Turn In

Turn in source code $($header file, multiple $.$c files$),$ input file and output file.