Program $1$ index.c

Write a program that reads the accounts.dat created in Assignment $7$ and creates an index file to

enable display.c to display the data in sorted order. $($Account Balance Descending$)$

Name your index file accounts.idx

The data filename and index filename will be passed to the program via command line arguments.

For simplicity, have the files reside in the program$$s current directory.

Example:

exename datafilename indexfilename

When the program starts, validate the arguments as follows:

a$)$ Check for the proper number of arguments. If incorrect, display a useful error message to the

user and exit the program.

b$)$ Ensure that the datafile exists. If the file does not exist, display a useful error message to the

user and exit the program.

Page $2$ of $22511-1520$A$08$R$01$

Program $2$ display.c $($Revise Assignment $7$ version$)$

Modify display.c to use the index file created in index.c$.$

The data filename and index filename will be passed to the program via command line arguments.

For simplicity, have the files reside in the program$$s current directory.

Example:

exename datafilename indexfilename

When the program starts, validate the arguments as follows:

a$)$ Check for the proper number of arguments. If incorrect, display a useful error message to the

user and exit the program.

b$)$ Ensure that the datafile exists. If the file does not exist, display a useful error message to the

user and exit the program.

c$)$ Ensure that the indexfile exists. If the file does not exist, display a useful error message to the

user and exit the program.

Create a menu which allows the use to display the data in:

$1.$ Natural order

$2.$ Account Balance Descending

$3.$ Exit

Place the menu in a loop so the user can display in different orders without having to restart the

program.Program $2$ display.c $($Revise Assignment $7$ version$)$

Modify display.c to use the index file created in index.c$.$

The data filename and index filename will be passed to the program via command line arguments.

For simplicity, have the files reside in the program$$s current directory.

Example:

exename datafilename indexfilename

When the program starts, validate the arguments as follows:

a$)$ Check for the proper number of arguments. If incorrect, display a useful error message to the

user and exit the program.

b$)$ Ensure that the datafile exists. If the file does not exist, display a useful error message to the

user and exit the program.

c$)$ Ensure that the indexfile exists. If the file does not exist, display a useful error message to the

user and exit the program.

Create a menu which allows the use to display the data in:

$1.$ Natural order

$2.$ Account Balance Descending

$3.$ Exit

Place the menu in a loop so the user can display in different orders without having to restart the

program.

Please Hand In:

$1.$ Zip your source files and datafile; upload the zipped file to the Assign$08$ Dropbox on D$2$L$.$