#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <stdbool.h>
#include <sys/wait.h>
#include <unistd.h>

int load(FILE *f_proc_stat)
{

    //declaration of variables to be read from /proc/stat
    const char cpu[3];
    int user, nice, system, idle, iowait, irq, softirq, steal, guest, guest_nice;

    //variables to be computed in the function
    int cpu_idle, cpu_prev_idle;
    int cpu_nonidle, cpu_prev_nonidle;
    int prev_total, total, total_d, idle_d;
    int cpu_percentage;
    char test[255];

    fgets(test, 255, f_proc_stat);


        sscanf(test, "%s %d %d %d %d %d %d %d %d %d %d", cpu, &user, &nice, &system, &idle, &iowait, &irq, &softirq, &steal, &guest, &guest_nice);

        cpu_prev_nonidle = user + nice + system + irq + softirq + steal;
        cpu_prev_idle = idle + iowait;

        printf("cpu_prev_nonidle is %d\n", cpu_prev_nonidle);


        sleep(1);

    fgets(test, 255, f_proc_stat);

        sscanf(test, "%s %d %d %d %d %d %d %d %d %d %d", cpu, &user, &nice, &system, &idle, &iowait, &irq, &softirq, &steal, &guest, &guest_nice);
        /*fscanf(f_proc_stat, "%s %d %d %d %d %d %d %d %d %d %d",
            cpu, &user, &nice, &system, &idle, &iowait, &irq, &softirq,
            &steal, &guest, &guest_nice);*/

        cpu_nonidle = user + nice + system + irq + softirq + steal;
        cpu_idle = idle + iowait;

        prev_total = cpu_prev_idle + cpu_prev_nonidle;