#include <stdio.h>
// Function to find the waiting time for all processes
int waitingtime(int proc[], int n,
int burst_time[], int wait_time[]) {
// waiting time for first process is 0
wait_time[0] = 0;
// calculating waiting time
for (int i = 1; i < n ; i++ )
wait_time[i] = burst_time[i-1] + wait_time[i-1] ;
return 0;
}
// Function to calculate turn around time
int turnaroundtime( int proc[], int n,
int burst_time[], int wait_time[], int tat[]) {
// calculating turnaround time by adding
// burst_time[i] + wait_time[i]
int i;
for ( i = 0; i < n ; i++)
tat[i] = burst_time[i] + wait_time[i];
return 0;
}
//Function to calculate average time
int avgtime( int proc[], int n, int burst_time[]) {
int wait_time[n], tat[n], total_wt = 0, total_tat = 0;
int i;
//Function to find waiting time of all processes
waitingtime(proc, n, burst_time, wait_time);
//Function to find turn around time for all processes
turnaroundtime(proc, n, burst_time, wait_time, tat);
//Display processes along with all details
printf("Processes Burst Waiting Turn around \n");
// Calculate total waiting time and total turn
// around time
for ( i=0; i<n; i++) {
total_wt = total_wt + wait_time[i];
total_tat = total_tat + tat[i];
printf(" %d\t %d\t\t %d \t%d\n", i+1, burst_time[i], wait_time[i], tat[i]);
}
printf("Average waiting time = %f\n", (float)total_wt / (float)n);
printf("Average turn around time = %f\n", (float)total_tat / (float)n);
return 0;
}
// main function
int main() {
//process id's
int proc[] = { 1, 2, 3};
int n = sizeof proc / sizeof proc[0];
//Burst time of all processes
int burst_time[] = {5, 8, 12};
avgtime(proc, n, burst_time);
return 0;
}
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