用c语言(1)设计随机进程产生程序，说明随机性能对算法可能产生的影响 (2)设计一一个基于动态优先级的时间片轮转调度算法 (3)若实现可视化效果(图形、动画显示等)

(1) 以下是用C语言实现随机进程产生程序的示例代码：

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

#define MAX_PROCESS_NUM 10
#define MAX_ARRIVE_TIME 20
#define MAX_RUN_TIME 10

typedef struct Process {
    int pid;            // 进程ID
    int arrive_time;    // 到达时间
    int run_time;       // 运行时间
} Process;

void generate_processes(Process *processes, int num) {
    srand(time(NULL));
    for (int i = 0; i < num; i++) {
        processes[i].pid = i + 1;
        processes[i].arrive_time = rand() % MAX_ARRIVE_TIME;
        processes[i].run_time = rand() % MAX_RUN_TIME + 1;    // 运行时间不能为0
    }
}

void print_processes(Process *processes, int num) {
    printf("PID\tArrive Time\tRun Time\n");
    for (int i = 0; i < num; i++) {
        printf("%d\t%d\t\t%d\n", processes[i].pid, processes[i].arrive_time, processes[i].run_time);
    }
}

int main() {
    Process processes[MAX_PROCESS_NUM];
    generate_processes(processes, MAX_PROCESS_NUM);
    print_processes(processes, MAX_PROCESS_NUM);
    return 0;
}

随机性能对算法可能产生的影响：当进程的到达时间、运行时间等参数具有一定的随机性时，会导致不同的调度算法的表现不同。例如，在FCFS算法中，如果随机生成的进程中有一个长时间运行的进程先到达，那么后面到达的进程就需要等待很长时间，而在SJF算法中，长时间运行的进程会优先执行，可以减少等待时间。

(2) 以下是用C语言实现基于动态优先级的时间片轮转调度算法的示例代码：

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

#define MAX_PROCESS_NUM 10
#define MAX_ARRIVE_TIME 20
#define MAX_RUN_TIME 10
#define TIME_SLICE 2

typedef struct Process {
    int pid;            // 进程ID
    int arrive_time;    // 到达时间
    int run_time;       // 运行时间
    int priority;       // 优先级
    int runned_time;    // 已经运行的时间
} Process;

void generate_processes(Process *processes, int num) {
    srand(time(NULL));
    for (int i = 0; i < num; i++) {
        processes[i].pid = i + 1;
        processes[i].arrive_time = rand() % MAX_ARRIVE_TIME;
        processes[i].run_time = rand() % MAX_RUN_TIME + 1;    // 运行时间不能为0
        processes[i].priority = rand() % 10 + 1;              // 优先级为1~10之间的整数
        processes[i].runned_time = 0;
    }
}

void print_processes(Process *processes, int num) {
    printf("PID\tArrive Time\tRun Time\tPriority\n");
    for (int i = 0; i < num; i++) {
        printf("%d\t%d\t\t%d\t\t%d\n", processes[i].pid, processes[i].arrive_time, processes[i].run_time, processes[i].priority);
    }
}

void dynamic_priority_rr(Process *processes, int num) {
    int time = 0;
    int finished_num = 0;
    int current_process = -1;
    while (finished_num < num) {
        current_process = -1;
        // 选取优先级最高的进程
        for (int i = 0; i < num; i++) {
            if (processes[i].run_time > 0 && processes[i].arrive_time <= time) {
                if (current_process == -1 || processes[i].priority > processes[current_process].priority) {
                    current_process = i;
                }
            }
        }
        if (current_process == -1) {
            // 当前时间段没有可运行的进程
            time++;
            continue;
        }
        // 执行一个时间片
        printf("Time %d: Process %d runs for %d units.\n", time, processes[current_process].pid, TIME_SLICE);
        processes[current_process].run_time -= TIME_SLICE;
        processes[current_process].runned_time += TIME_SLICE;
        if (processes[current_process].run_time == 0) {
            // 进程执行完毕
            printf("Time %d: Process %d finishes.\n", time + TIME_SLICE, processes[current_process].pid);
            finished_num++;
        } else {
            // 进程未执行完毕，更新优先级
            processes[current_process].priority--;
            if (processes[current_process].priority == 0) {
                // 优先级降为0时，重置为初始优先级
                processes[current_process].priority = rand() % 10 + 1;
            }
        }
        time += TIME_SLICE;
    }
}

int main() {
    Process processes[MAX_PROCESS_NUM];
    generate_processes(processes, MAX_PROCESS_NUM);
    print_processes(processes, MAX_PROCESS_NUM);
    dynamic_priority_rr(processes, MAX_PROCESS_NUM);
    return 0;
}

(3) 若要实现可视化效果，可以使用图形库（如SDL2、GTK+、Qt等）来实现图形界面和动画效果，也可以使用命令行界面（如ncurses）来显示进程的运行状态。以下是使用ncurses库实现简单的命令行界面的示例代码：

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <unistd.h>
#include <ncurses.h>

#define MAX_PROCESS_NUM 10
#define MAX_ARRIVE_TIME 20
#define MAX_RUN_TIME 10
#define TIME_SLICE 2

typedef struct Process {
    int pid;            // 进程ID
    int arrive_time;    // 到达时间
    int run_time;       // 运行时间
    int priority;       // 优先级
    int runned_time;    // 已经运行的时间
} Process;

void generate_processes(Process *processes, int num) {
    srand(time(NULL));
    for (int i = 0; i < num; i++) {
        processes[i].pid = i + 1;
        processes[i].arrive_time = rand() % MAX_ARRIVE_TIME;
        processes[i].run_time = rand() % MAX_RUN_TIME + 1;    // 运行时间不能为0
        processes[i].priority = rand() % 10 + 1;              // 优先级为1~10之间的整数
        processes[i].runned_time = 0;
    }
}

void print_processes(Process *processes, int num) {
    printf("PID\tArrive Time\tRun Time\tPriority\n");
    for (int i = 0; i < num; i++) {
        printf("%d\t%d\t\t%d\t\t%d\n", processes[i].pid, processes[i].arrive_time, processes[i].run_time, processes[i].priority);
    }
}

void dynamic_priority_rr(Process *processes, int num) {
    int time = 0;
    int finished_num = 0;
    int current_process = -1;
    initscr();
    cbreak();
    noecho();
    curs_set(0);
    mvprintw(0, 0, "Time\tPID\tPriority\tRun Time\tStatus");
    while (finished_num < num) {
        current_process = -1;
        // 选取优先级最高的进程
        for (int i = 0; i < num; i++) {
            if (processes[i].run_time > 0 && processes[i].arrive_time <= time) {
                if (current_process == -1 || processes[i].priority > processes[current_process].priority) {
                    current_process = i;
                }
            }
        }
        if (current_process == -1) {
            // 当前时间段没有可运行的进程
            time++;
            usleep(200000);
            continue;
        }
        // 执行一个时间片
        mvprintw(time + 1, 0, "%d\t%d\t%d\t\t%d\t\trunning", time, processes[current_process].pid, processes[current_process].priority, processes[current_process].run_time);
        processes[current_process].run_time -= TIME_SLICE;
        processes[current_process].runned_time += TIME_SLICE;
        if (processes[current_process].run_time == 0) {
            // 进程执行完毕
            mvprintw(time + 1, 44, "finished");
            finished_num++;
        } else {
            // 进程未执行完毕，更新优先级
            processes[current_process].priority--;
            if (processes[current_process].priority == 0) {
                // 优先级降为0时，重置为初始优先级
                processes[current_process].priority = rand() % 10 + 1;
            }
        }
        time += TIME_SLICE;
        usleep(200000);
    }
    mvprintw(time + 2, 0, "Press any key to exit...");
    getch();
    endwin();
}

int main() {
    Process processes[MAX_PROCESS_NUM];
    generate_processes(processes, MAX_PROCESS_NUM);
    print_processes(processes, MAX_PROCESS_NUM);
    dynamic_priority_rr(processes, MAX_PROCESS_NUM);
    return 0;
}