stack.c

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

typedef struct {
    char name[11];
    int priority;
    int runtime;
} Process;

float calculate_average_turnaround_time(Process processes[], int num_processes) {
    int current_time = 0;
    int total_turnaround_time = 0;

    for (int i = 0; i < num_processes; i++) {
        int start_time = current_time;
        current_time += processes[i].runtime;
        int end_time = current_time;
        int turnaround_time = end_time - start_time;
        total_turnaround_time += turnaround_time;
    }

    float average_turnaround_time = (float)total_turnaround_time / num_processes;
    return average_turnaround_time;
}

int main() {
    Process processes[3];

    // 输入进程信息
    for (int i = 0; i < 3; i++) {
        scanf("%s %d %d", processes[i].name, &processes[i].priority, &processes[i].runtime);
    }

    // 计算平均作业周转时间
    float average_turnaround_time = calculate_average_turnaround_time(processes, 3);

    // 输出结果
    printf("%.1f\n", average_turnaround_time);

    return 0;
}