用c语言的时间片转轮调度算法实现单处理机系统的进程调度

以下是使用C语言实现时间片转轮调度算法的单处理机系统进程调度的示例代码：

#include <stdio.h>
#include <stdlib.h>

#define MAX_PROCESSES 10
#define TIME_QUANTUM 4

struct process {
    int pid;
    int arrival_time;
    int burst_time;
    int remaining_time;
    int waiting_time;
    int turnaround_time;
};

int n;
struct process processes[MAX_PROCESSES];

void read_processes() {
    printf("Enter the number of processes: ");
    scanf("%d", &n);

    for (int i = 0; i < n; i++) {
        printf("Enter arrival time and burst time of process %d: ", i+1);
        scanf("%d%d", &processes[i].arrival_time, &processes[i].burst_time);
        processes[i].pid = i+1;
        processes[i].remaining_time = processes[i].burst_time;
    }
}

void print_processes() {
    printf("Process\tArrival Time\tBurst Time\tWaiting Time\tTurnaround Time\n");
    for (int i = 0; i < n; i++) {
        printf("%d\t%d\t\t%d\t\t%d\t\t%d\n", processes[i].pid, processes[i].arrival_time,
               processes[i].burst_time, processes[i].waiting_time, processes[i].turnaround_time);
    }
}

void schedule_processes() {
    int current_time = 0;
    int completed_processes = 0;

    while (completed_processes < n) {
        for (int i = 0; i < n; i++) {
            if (processes[i].arrival_time <= current_time && processes[i].remaining_time > 0) {
                int remaining_time = processes[i].remaining_time;
                if (remaining_time > TIME_QUANTUM) {
                    remaining_time = TIME_QUANTUM;
                }
                current_time += remaining_time;
                processes[i].remaining_time -= remaining_time;

                if (processes[i].remaining_time == 0) {
                    processes[i].waiting_time = current_time - processes[i].arrival_time - processes[i].burst_time;
                    processes[i].turnaround_time = current_time - processes[i].arrival_time;
                    completed_processes++;
                }
            }
        }
    }
}

int main() {
    read_processes();
    schedule_processes();
    print_processes();
    return 0;
}

该代码首先读取用户输入的进程数量和每个进程的到达时间和执行时间。然后，它使用时间片转轮调度算法来调度进程，并计算每个进程的等待时间和周转时间。最后，它打印出所有进程的详细信息，包括它们的到达时间、执行时间、等待时间和周转时间。