Hi I need help with my code. so it doesnt allow me to input any number nor does it display the turnaround time and the waiting time. Can you please help me$?$ #include

#include

#include

#define EXIT $0$

#define INVALID $-1$

#define CPU $1$

#define PID $5$

$//$ Function prototypes

int displayMenu$()$;

void cpuScheduling$()$;

void fcfs$($int process$[],$ int at$[],$ int bt$[])$;

void sjf$($int process$[],$ int at$[],$ int bt$[])$;

void displaySchedule$($int process$[],$ int at$[],$ int bt$[],$ int wt$[],$ int tat$[])$;

int main$()\{$

int choice $=$ INVALID;

$//$ Main loop

while $($choice $!=$ EXIT$)\{$

choice $=$ displayMenu$()$;

$//$ Execute CPU scheduling functionality for choice CPU

if $($choice $==$ CPU$)\{$

cpuScheduling$()$;

$\}$

$//$ Exit the program if choice is EXIT

else if $($choice $==$ EXIT$)\{$

exit$($EXIT$\_$SUCCESS$)$;

$\}$

$\}$

return $0$;

$\}$

$//$ Function to display the OS Management Menu and get user's choice

int displayMenu$()\{$

int choice $=$ INVALID;

$//$ Display the OS Management Menu

printf$("$

OS Management Menu

$")$;

printf$("1.$ CPU Scheduling

$")$;

printf$("0.$ Exit

$")$;

$//$ Prompt user for choice and validate

do $\{$

printf$("$Enter your choice: $")$;

scanf$("\%$d$",$ &choice$)$;

if $($choice $<$ EXIT $||$ choice $>$ CPU$)\{$

printf$("$Invalid choice. Please enter a valid choice.

$")$;

choice $=$ INVALID;

$\}$

$\}$ while $($choice $==$ INVALID$)$;

return choice;

$\}$

$//$ Function to perform CPU scheduling

void cpuScheduling$()\{$

$//$ Fixed data for processes $($as per the assignment$)$

int process$[5]=\{1,2,3,4,5\}$;

int at$[5]=\{0,2,4,6,7\}$;

int bt$[5]=\{8,5,10,2,3\}$;

$//$ Perform FCFS and SJF scheduling

fcfs$($process$,$ at$,$ bt$)$;

sjf$($process$,$ at$,$ bt$)$;

$\}$

$//$ First$-$Come, First$-$Served scheduling algorithm

void fcfs$($int process$[],$ int at$[],$ int bt$[])\{$

$//$ Calculate waiting times and turnaround times for FCFS

int wt$[5],$ tat$[5]$;

wt$[0]=0$;

for $($int i $=1$; i $<5$; i$++)\{$

wt$[$i$]=$ bt$[$i $-1]+$ wt$[$i $-1]-$ at$[$i$]$;

if $($wt$[$i$]<0)\{$

wt$[$i$]=0$;

$\}$

$\}$

for $($int i $=0$; i $<5$; i$++)\{$

tat$[$i$]=$ bt$[$i$]+$ wt$[$i$]$;

$\}$

$//$ Display schedule and statistics for FCFS

displaySchedule$($process$,$ at$,$ bt$,$ wt$,$ tat$)$;

$\}$

$//$ Shortest Job First scheduling algorithm

void sjf$($int process$[],$ int at$[],$ int bt$[])\{$

$//$ Sort processes based on burst time for SJF

for $($int i $=0$; i $<4$; i$++)\{$

for $($int j $=0$; j $<4-$ i; j$++)\{$

if $($bt$[$j$]>$ bt$[$j $+1])\{$

$//$ Swap burst times

int temp $=$ bt$[$j$]$;

bt$[$j$]=$ bt$[$j $+1]$;

bt$[$j $+1]=$ temp;

$//$ Swap process IDs

temp $=$ process$[$j$]$;

process$[$j$]=$ process$[$j $+1]$;

process$[$j $+1]=$ temp;

$//$ Swap arrival times

temp $=$ at$[$j$]$;

at$[$j$]=$ at$[$j $+1]$;

at$[$j $+1]=$ temp;

$\}$

$\}$

$\}$

$//$ Calculate waiting times and turnaround times for SJF

int wt$[5],$ tat$[5]$;

wt$[0]=0$;

for $($int i $=1$; i $<5$; i$++)\{$

wt$[$i$]=$ bt$[$i $-1]+$ wt$[$i $-1]-$ at$[$i$]$;

if $($wt$[$i$]<0)\{$

wt$[$i$]=0$;

$\}$

$\}$

for $($int i $=0$; i $<5$; i$++)\{$

tat$[$i$]=$ bt$[$i$]+$ wt$[$i$]$;

$\}$

$//$ Display schedule and statistics for SJF

displaySchedule$($process$,$ at$,$ bt$,$ wt$,$ tat$)$;

$\}$

$//$ Function to display schedule and statistics

void displaySchedule$($int process$[],$ int at$[],$ int bt$[],$ int wt$[],$ int tat$[])\{$

$//$ Display schedule and statistics

printf$("$

Process$\backslash$t Arrival Time$\backslash$t Burst Time$\backslash$t Waiting Time$\backslash$t Turnaround Time

$")$;

for $($int i $=0$; i $<5$; i$++)\{$

printf$("\%$d$\backslash$t $\%$d$\backslash$t$\backslash$t $\%$d$\backslash$t$\backslash$t $\%$d$\backslash$t$\backslash$t $\%$d

$",$ process$[$i$],$ at$[$i$],$ bt$[$i$],$ wt$[$i$],$ tat$[$i$])$;

$\}$

$\}$