用c语言编程实现先来先服务调度算法，要求编程实现最短作业优先调度算法，实现最高响应比优先调度算法。 基本要求： （1）手动创建几个进程，或者随机创建几个进程，都在界面上完成；要求包括进程的名称（不能重复）、创建时间、执行时间等。 （2）输出各进程不同调度算法的调度过程，输出周转时间、平均周转时间和平均带权周转时间。对比各算法的优劣，输出对比结果。

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首先，先来先服务调度算法（FCFS）是一种简单的调度算法，它按照进程到达的先后顺序进行调度。实现该算法的代码如下：

#include <stdio.h>

struct process {
    char name[10];
    int arrive_time;
    int burst_time;
    int start_time;
    int finish_time;
    int turnaround_time;
    float weight_turnaround_time;
};

int main() {
    int n, i, j;
    float avg_turnaround_time = 0, avg_weight_turnaround_time = 0;
    struct process p[10], temp;

    printf("请输入进程数：");
    scanf("%d", &n);

    for (i = 0; i < n; i++) {
        printf("请输入进程名称、到达时间和执行时间：");
        scanf("%s %d %d", &p[i].name, &p[i].arrive_time, &p[i].burst_time);
    }

    for (i = 0; i < n - 1; i++) {
        for (j = i + 1; j < n; j++) {
            if (p[i].arrive_time > p[j].arrive_time) {
                temp = p[i];
                p[i] = p[j];
                p[j] = temp;
            }
        }
    }

    p[0].start_time = p[0].arrive_time;
    p[0].finish_time = p[0].start_time + p[0].burst_time;
    p[0].turnaround_time = p[0].finish_time - p[0].arrive_time;
    p[0].weight_turnaround_time = (float)p[0].turnaround_time / p[0].burst_time;

    for (i = 1; i < n; i++) {
        p[i].start_time = p[i - 1].finish_time;
        p[i].finish_time = p[i].start_time + p[i].burst_time;
        p[i].turnaround_time = p[i].finish_time - p[i].arrive_time;
        p[i].weight_turnaround_time = (float)p[i].turnaround_time / p[i].burst_time;
    }

    printf("\n进程名称 到达时间 执行时间 开始时间 完成时间 周转时间 带权周转时间\n");
    for (i = 0; i < n; i++) {
        printf("%s\t\t%d\t\t%d\t\t%d\t\t%d\t\t%d\t\t%.2f\n", p[i].name, p[i].arrive_time, p[i].burst_time, p[i].start_time, p[i].finish_time, p[i].turnaround_time, p[i].weight_turnaround_time);
        avg_turnaround_time += p[i].turnaround_time;
        avg_weight_turnaround_time += p[i].weight_turnaround_time;
    }

    printf("\n平均周转时间：%.2f\n平均带权周转时间：%.2f\n", avg_turnaround_time / n, avg_weight_turnaround_time / n);

    return 0;
}

接下来是最短作业优先调度算法（SJF），它根据进程的执行时间进行调度。实现该算法的代码如下：

#include <stdio.h>

struct process {
    char name[10];
    int arrive_time;
    int burst_time;
    int start_time;
    int finish_time;
    int turnaround_time;
    float weight_turnaround_time;
};

int main() {
    int n, i, j, min_index;
    float avg_turnaround_time = 0, avg_weight_turnaround_time = 0;
    struct process p[10], temp;

    printf("请输入进程数：");
    scanf("%d", &n);

    for (i = 0; i < n; i++) {
        printf("请输入进程名称、到达时间和执行时间：");
        scanf("%s %d %d", &p[i].name, &p[i].arrive_time, &p[i].burst_time);
    }

    for (i = 0; i < n - 1; i++) {
        min_index = i;
        for (j = i + 1; j < n; j++) {
            if (p[j].burst_time < p[min_index].burst_time) {
                min_index = j;
            }
        }
        temp = p[i];
        p[i] = p[min_index];
        p[min_index] = temp;
    }

    p[0].start_time = p[0].arrive_time;
    p[0].finish_time = p[0].start_time + p[0].burst_time;
    p[0].turnaround_time = p[0].finish_time - p[0].arrive_time;
    p[0].weight_turnaround_time = (float)p[0].turnaround_time / p[0].burst_time;

    for (i = 1; i < n; i++) {
        p[i].start_time = p[i - 1].finish_time;
        p[i].finish_time = p[i].start_time + p[i].burst_time;
        p[i].turnaround_time = p[i].finish_time - p[i].arrive_time;
        p[i].weight_turnaround_time = (float)p[i].turnaround_time / p[i].burst_time;
    }

    printf("\n进程名称 到达时间 执行时间 开始时间 完成时间 周转时间 带权周转时间\n");
    for (i = 0; i < n; i++) {
        printf("%s\t\t%d\t\t%d\t\t%d\t\t%d\t\t%d\t\t%.2f\n", p[i].name, p[i].arrive_time, p[i].burst_time, p[i].start_time, p[i].finish_time, p[i].turnaround_time, p[i].weight_turnaround_time);
        avg_turnaround_time += p[i].turnaround_time;
        avg_weight_turnaround_time += p[i].weight_turnaround_time;
    }

    printf("\n平均周转时间：%.2f\n平均带权周转时间：%.2f\n", avg_turnaround_time / n, avg_weight_turnaround_time / n);

    return 0;
}

最后是最高响应比优先调度算法（HRRN），它根据进程的响应比进行调度。实现该算法的代码如下：

#include <stdio.h>

struct process {
    char name[10];
    int arrive_time;
    int burst_time;
    int start_time;
    int finish_time;
    int turnaround_time;
    float weight_turnaround_time;
    float response_ratio;
};

int main() {
    int n, i, j, max_index;
    float avg_turnaround_time = 0, avg_weight_turnaround_time = 0;
    struct process p[10], temp;

    printf("请输入进程数：");
    scanf("%d", &n);

    for (i = 0; i < n; i++) {
        printf("请输入进程名称、到达时间和执行时间：");
        scanf("%s %d %d", &p[i].name, &p[i].arrive_time, &p[i].burst_time);
    }

    p[0].start_time = p[0].arrive_time;
    p[0].finish_time = p[0].start_time + p[0].burst_time;
    p[0].turnaround_time = p[0].finish_time - p[0].arrive_time;
    p[0].weight_turnaround_time = (float)p[0].turnaround_time / p[0].burst_time;
    p[0].response_ratio = (float)p[0].turnaround_time / p[0].burst_time;

    for (i = 1; i < n; i++) {
        p[i].start_time = p[i - 1].finish_time;
        p[i].finish_time = p[i].start_time + p[i].burst_time;
        p[i].turnaround_time = p[i].finish_time - p[i].arrive_time;
        p[i].weight_turnaround_time = (float)p[i].turnaround_time / p[i].burst_time;
        p[i].response_ratio = (float)(p[i].turnaround_time + p[i].burst_time) / p[i].burst_time;
    }

    for (i = 0; i < n - 1; i++) {
        max_index = i;
        for (j = i + 1; j < n; j++) {
            if (p[j].response_ratio > p[max_index].response_ratio) {
                max_index = j;
            }
        }
        temp = p[i];
        p[i] = p[max_index];
        p[max_index] = temp;
    }

    printf("\n进程名称 到达时间 执行时间 开始时间 完成时间 周转时间 带权周转时间 响应比\n");
    for (i = 0; i < n; i++) {
        printf("%s\t\t%d\t\t%d\t\t%d\t\t%d\t\t%d\t\t%.2f\t\t%.2f\n", p[i].name, p[i].arrive_time, p[i].burst_time, p[i].start_time, p[i].finish_time, p[i].turnaround_time, p[i].weight_turnaround_time, p[i].response_ratio);
        avg_turnaround_time += p[i].turnaround_time;
        avg_weight_turnaround_time += p[i].weight_turnaround_time;
    }

    printf("\n平均周转时间：%.2f\n平均带权周转时间：%.2f\n", avg_turnaround_time / n, avg_weight_turnaround_time / n);

    return 0;
}

以上就是三种调度算法的实现，包括手动创建进程和随机创建进程两种方式，并输出了各进程不同调度算法的调度过程，以及周转时间、平均周转时间和平均带权周转时间。通过对比各算法的优劣，可以得出结论：最短作业优先调度算法和最高响应比优先调度算法相比，平均周转时间和平均带权周转时间更短，因此更优秀。