Write a C program that can manage checking and savings accounts.

Requirements:

$-$ The program can keep track of a maximum of $10$ accounts.

$-$ The program can create a bank account.

o It takes the following fields:

$$ Account number should be a $4-$digit integer $($ex$)$ a number between $1000$

and $9999.$

$$ If the account number is already used by another account, the

program needs to ask a diOerent account number.

$$ Account type $($checking or savings$)$

$$ You need to check the user input.

$$ Holder name

$$ The maximum length of the name is $30$ characters.

$$ Open date $($string$,$ format: YYYY$-$MM$-$DD$)$

$$ You need to check the user input format.

$$ Balance

$$ Hint: Use a structure.

$-$ The program can deposit money into a bank account.

o The program prints out the remaining balance.

$$ The format string is $\%-15\mathrm{.}2$f$.$

$-$ The program can withdraw money from a bank account.

o The program prints out the remaining balance.

$$ The format string is $\%-15\mathrm{.}2$f$.$

$-$ The program can sort accounts by diOerent fields and print them.

o Hint: Use qsort$()$ function on Page $440$ of the textbook.

o Sorting fields: account number, holder name, open date and balance.

o To print the holder name, the format string is $\%-30$s$.$

o To print the balance, the format string is $\%15\mathrm{.}2$f$.$

$-$ Hint: Refer to $$inventory$.$c$$ on Page $391$ of the textbook.

Example Interaction $($user input is underlined; your program must follow this format

precisely without the underline$)$:

$ gcc $-$Wall assignment$6.$c

$

$

$$./$a$.$out

$*******$ Main menu $*******$

c$($reate an account$)$

d$($eposit money$)$

w$($ithdraw money$)$

s$($sort and print accounts$)$

q$($uit program$)$

$*************************$

Enter operation code $($c$,$ d$,$ w$,$ s$,$ q$)$: c

Enter account number $(4$ digits$)$: $-20$

Enter a number between $1000$ and $9999.$

Enter account number $(4$ digits$)$: $12345$

Enter a number between $1000$ and $9999.$

Enter account number $(4$ digits$)$: $1111$

Enter account type: c$($hecking$),$ s$($avings$)$

c or s: d

Wrong account type. Enter c or s$.$

Enter account type: c$($hecking$),$ s$($avings$)$

c or s: C

Enter account holder's name: John Smith

Enter open date $($YYYY$-$MM$-$DD$)$: $00000000$

$00000000$ Wrong date format.

Enter open date $($YYYY$-$MM$-$DD$)$: $0000-00-00$

$0000-00-00$ Wrong date format.

Enter open date $($YYYY$-$MM$-$DD$)$: $2024-7-1$

$2024-7-1$ Wrong date format.

Enter open date $($YYYY$-$MM$-$DD$)$: $2024-07-01$

Enter balance $($number only$)$: $ $5000\mathrm{.}55$

Account $1111$ is created.

$*******$ Main menu $*******$

c$($reate an account$)$

d$($eposit money$)$

w$($ithdraw money$)$

s$($sort and print accounts$)$

q$($uit program$)$

$*************************$

Enter operation code $($c$,$ d$,$ w$,$ s$,$ q$)$: c

Enter account number $(4$ digits$)$: $2222$

Enter account type: c$($hecking$),$ s$($avings$)$

c or s: S

Enter account holder's name: Emily Davis

Enter open date $($YYYY$-$MM$-$DD$)$: $2024-03-15$

Enter balance $($number only$)$: $ $680\mathrm{.}30$

Account $2222$ is created.

$*******$ Main menu $*******$

c$($reate an account$)$

d$($eposit money$)$

w$($ithdraw money$)$

s$($sort and print accounts$)$

q$($uit program$)$

$*************************$

Enter operation code $($c$,$ d$,$ w$,$ s$,$ q$)$: s

Enter the sorting field: a$($ccount number$),$ h$($older name$),$ o$($pen date$),$ b$($alance$)$

a$,$ h$,$ o or b: a

#### Type Holder name Open date Balance

$--------------------------------------------------------------------$

$1111$ C John Smith $2024-07-015000\mathrm{.}55$

$2222$ S Emily Davis $2024-03-15680\mathrm{.}30$

$--------------------------------------------------------------------$

$*******$ Main menu $*******$

c$($reate an account$)$

d$($eposit money$)$

w$($ithdraw money$)$

s$($sort and print accounts$)$

q$($uit program$)$

$*************************$

Enter operation code $($c$,$ d$,$ w$,$ s$,$ q$)$: s

Enter the sorting field: a$($ccount number$),$ h$($older name$),$ o$($pen date$),$ b$($alance$)$

a$,$ h$,$ o or b: h

#### Type Holder name Open date Balance

$--------------------------------------------------------------------$

$2222$ S Emily Davis $2024-03-15680\mathrm{.}30$

$1111$ C John Smith $2024-07-015000\mathrm{.}55$

$--------------------------------------------------------------------$

$*******$ Main menu $*******$

c$($reate an account$)$

d$($eposit money$)$

w$($ithdraw money$)$

s$($sort and print accounts$)$

q$($uit program$)$

$*************************$

Enter operation code $($c$,$ d$,$ w$,$ s$,$ q$)$: s

Enter the sorting field: a$($ccount number$),$ h$($older name$),$ o$($pen date$),$ b$($alance$)$

a$,$ h$,$ o or b: o

#### Type Holder name Open date Balance

$--------------------------------------------------------------------$

$2222$ S Emily Davis $2024-03-15680\mathrm{.}30$

$1111$ C John Smith $2024-07-015000\mathrm{.}55$

$--------------------------------------------------------------------$

$*******$ Main menu $*******$

c$($reate an account$)$

d$($eposit money$)$

w$($ithdraw money$)$

s$($sort and print accounts$)$

q$($uit program$)$

$*************************$

Enter operation code $($c$,$ d$,$ w