高响应比调度算法 C语言实现，要求输出进程调度过程以及系统平均带权周转时间

高响应比调度算法是一种优化的进程调度算法，可以有效地提高进程响应速度和系统性能。下面是一个 C 语言实现的高响应比调度算法示例：

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

#define MAX_PROCESSES 10

typedef struct {
    int pid;            // 进程 ID
    int arrival_time;   // 到达时间
    int burst_time;     // 执行时间
    int response_ratio; // 响应比
} Process;

void swap(Process *p1, Process *p2)
{
    Process temp = *p1;
    *p1 = *p2;
    *p2 = temp;
}

int main()
{
    int n, i, j;
    float avg_wt = 0.0, avg_tt = 0.0;

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

    Process processes[MAX_PROCESSES];

    // 输入进程信息
    for (i = 0; i < n; i++) {
        printf("Enter the 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].response_ratio = 0;
    }

    // 计算响应比
    int total_time = 0;
    for (i = 0; i < n; i++) {
        total_time += processes[i].burst_time;
    }
    for (i = 0; i < n; i++) {
        processes[i].response_ratio = 1 + (total_time - processes[i].arrival_time) / processes[i].burst_time;
    }

    // 按照响应比排序
    for (i = 0; i < n - 1; i++) {
        for (j = 0; j < n - i - 1; j++) {
            if (processes[j].response_ratio < processes[j+1].response_ratio) {
                swap(&processes[j], &processes[j+1]);
            }
        }
    }

    // 打印进程调度过程和计算平均带权周转时间
    int completion_time[MAX_PROCESSES] = {0};
    int turnaround_time[MAX_PROCESSES] = {0};
    int waiting_time[MAX_PROCESSES] = {0};
    for (i = 0; i < n; i++) {
        completion_time[i] = (i == 0 ? processes[i].arrival_time : completion_time[i-1]) + processes[i].burst_time;
        turnaround_time[i] = completion_time[i] - processes[i].arrival_time;
        waiting_time[i] = turnaround_time[i] - processes[i].burst_time;
        avg_wt += waiting_time[i];
        avg_tt += turnaround_time[i];
        printf("Process %d: start time %d, end time %d\n", processes[i].pid, (i == 0 ? processes[i].arrival_time : completion_time[i-1]), completion_time[i]);
    }
    avg_wt /= n;
    avg_tt /= n;

    printf("Average waiting time: %.2f\n", avg_wt);
    printf("Average turnaround time: %.2f\n", avg_tt);

    return 0;
}

该示例中，我们首先输入进程的到达时间和执行时间，并计算出每个进程的响应比。然后，我们按照响应比从大到小排序，并打印出进程的调度过程。最后，我们计算出平均带权周转时间并输出。

使用该算法可以有效地提高系统的性能和进程的响应速度。