用C语言设计一个按先来先服务，算法时间片轮转法，优先数调度算法实现处理器调度的程序。

好的，我可以为您提供一个基本的程序框架，但是由于篇幅限制，可能无法提供完整的代码实现。以下是伪代码：

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

// 定义进程结构体
typedef struct Process {
    int pid;  // 进程 ID
    int arrivalTime;  // 到达时间
    int burstTime;  // 执行时间
    int priority;  // 优先级
    int remainingTime;  // 剩余时间
} Process;

// 定义节点结构体
typedef struct Node {
    Process process;
    struct Node* next;
} Node;

// 定义队列结构体
typedef struct Queue {
    Node* front;
    Node* rear;
} Queue;

// 初始化队列
void initializeQueue(Queue* queue) {
    queue->front = NULL;
    queue->rear = NULL;
}

// 判断队列是否为空
int isQueueEmpty(Queue* queue) {
    return queue->front == NULL;
}

// 入队
void enqueue(Queue* queue, Process process) {
    Node* newNode = (Node*)malloc(sizeof(Node));
    newNode->process = process;
    newNode->next = NULL;
    if (isQueueEmpty(queue)) {
        queue->front = newNode;
        queue->rear = newNode;
    } else {
        queue->rear->next = newNode;
        queue->rear = newNode;
    }
}

// 出队
Process dequeue(Queue* queue) {
    if (isQueueEmpty(queue)) {
        printf("Queue is empty.\n");
        exit(1);
    }
    Node* temp = queue->front;
    Process process = temp->process;
    queue->front = temp->next;
    if (queue->front == NULL) {
        queue->rear = NULL;
    }
    free(temp);
    return process;
}

// 按到达时间排序
void sortByArrivalTime(Process* processes, int n) {
    int i, j;
    Process temp;
    for (i = 0; i < n - 1; i++) {
        for (j = i + 1; j < n; j++) {
            if (processes[i].arrivalTime > processes[j].arrivalTime) {
                temp = processes[i];
                processes[i] = processes[j];
                processes[j] = temp;
            }
        }
    }
}

// 先来先服务算法
void FCFS(Process* processes, int n) {
    int i, currentTime = 0, waitingTime = 0, turnaroundTime = 0;
    printf("\nFCFS Scheduling:\n");
    for (i = 0; i < n; i++) {
        if (currentTime < processes[i].arrivalTime) {
            currentTime = processes[i].arrivalTime;
        }
        waitingTime += currentTime - processes[i].arrivalTime;
        turnaroundTime += currentTime - processes[i].arrivalTime + processes[i].burstTime;
        currentTime += processes[i].burstTime;
        printf("Process %d: Waiting Time = %d, Turnaround Time = %d\n", processes[i].pid, currentTime - processes[i].arrivalTime - processes[i].burstTime, currentTime - processes[i].arrivalTime);
    }
    printf("Average Waiting Time = %.2f\n", (float)waitingTime / n);
    printf("Average Turnaround Time = %.2f\n", (float)turnaroundTime / n);
}

// 时间片轮转算法
void RR(Process* processes, int n, int timeQuantum) {
    int i, currentTime = 0, waitingTime = 0, turnaroundTime = 0, completed = 0;
    Queue queue;
    initializeQueue(&queue);
    printf("\nRR Scheduling:\n");
    for (i = 0; i < n; i++) {
        processes[i].remainingTime = processes[i].burstTime;
    }
    enqueue(&queue, processes[0]);
    while (completed < n) {
        Process currentProcess = dequeue(&queue);
        if (currentProcess.remainingTime <= timeQuantum) {
            currentTime += currentProcess.remainingTime;
            waitingTime += currentTime - currentProcess.arrivalTime - currentProcess.burstTime;
            turnaroundTime += currentTime - currentProcess.arrivalTime;
            completed++;
            printf("Process %d: Waiting Time = %d, Turnaround Time = %d\n", currentProcess.pid, currentTime - currentProcess.arrivalTime - currentProcess.burstTime, currentTime - currentProcess.arrivalTime);
            for (i = 0; i < n; i++) {
                if (processes[i].pid == currentProcess.pid) {
                    break;
                }
            }
            for (; i < n - 1; i++) {
                processes[i] = processes[i + 1];
            }
            n--;
        } else {
            currentTime += timeQuantum;
            currentProcess.remainingTime -= timeQuantum;
            while (i < n && processes[i].arrivalTime <= currentTime) {
                enqueue(&queue, processes[i]);
                i++;
            }
            enqueue(&queue, currentProcess);
        }
    }
    printf("Average Waiting Time = %.2f\n", (float)waitingTime / n);
    printf("Average Turnaround Time = %.2f\n", (float)turnaroundTime / n);
}

// 优先数调度算法
void priorityScheduling(Process* processes, int n) {
    int i, currentTime = 0, waitingTime = 0, turnaroundTime = 0, completed = 0;
    Queue queue;
    initializeQueue(&queue);
    printf("\nPriority Scheduling:\n");
    for (i = 0; i < n; i++) {
        processes[i].remainingTime = processes[i].burstTime;
    }
    enqueue(&queue, processes[0]);
    while (completed < n) {
        Process currentProcess = dequeue(&queue);
        currentTime += currentProcess.remainingTime;
        waitingTime += currentTime - currentProcess.arrivalTime - currentProcess.burstTime;
        turnaroundTime += currentTime - currentProcess.arrivalTime;
        completed++;
        printf("Process %d: Waiting Time = %d, Turnaround Time = %d\n", currentProcess.pid, currentTime - currentProcess.arrivalTime - currentProcess.burstTime, currentTime - currentProcess.arrivalTime);
        for (i = 0; i < n; i++) {
            if (processes[i].pid == currentProcess.pid) {
                break;
            }
        }
        for (; i < n - 1; i++) {
            processes[i] = processes[i + 1];
        }
        n--;
        sortByArrivalTime(processes, n);
        for (i = 0; i < n; i++) {
            if (processes[i].arrivalTime > currentTime) {
                break;
            }
            enqueue(&queue, processes[i]);
        }
    }
    printf("Average Waiting Time = %.2f\n", (float)waitingTime / n);
    printf("Average Turnaround Time = %.2f\n", (float)turnaroundTime / n);
}

int main() {
    int i, n, timeQuantum;
    printf("Enter the number of processes: ");
    scanf("%d", &n);
    Process* processes = (Process*)malloc(n * sizeof(Process));
    for (i = 0; i < n; i++) {
        printf("Enter the arrival time, burst time and priority for process %d: ", i + 1);
        scanf("%d%d%d", &processes[i].arrivalTime, &processes[i].burstTime, &processes[i].priority);
        processes[i].pid = i + 1;
    }
    sortByArrivalTime(processes, n);
    FCFS(processes, n);
    printf("Enter the time quantum for RR scheduling: ");
    scanf("%d", &timeQuantum);
    RR(processes, n, timeQuantum);
    priorityScheduling(processes, n);
    return 0;
}

该程序实现了先来先服务算法、时间片轮转算法和优先数调度算法，根据用户输入的进程信息，计算并输出平均等待时间和平均周转时间。