#include <stdio.h>
#include <stdlib.h>
#include <time.h>
typedef struct structure{

    int t;
    float tp;
    float tt;//declared values
    float tf;
} values;
void random_values (float *tp,float *tt,float *tf){
    *tp = rand() % (201)+500;
    *tt = rand() % (101)+100;//random variables
    *tf = rand() % (11)+10;
    }
void print (values circular_values[21], int total_time){

    printf("t - tp - tt - tf\n");

    int offset;
    if (total_time+10<21) {
        offset=((total_time+10)*-1)+11;
    }
    else{
        offset=-10;
    }

    int i;
    for ( i =offset; i<11;i++){
        int array_location=(total_time+i-1) % 21;
        printf("%d - %.0f - %.0f - %.0f\n", offset, circular_values[array_location].tp, circular_values[array_location].tt, circular_values[array_location].tf);
    offset++;
        }
    }

int main() {

    srand((time(0)));

   int t=0;
   float tf,tt;
   float tp=1000;

    values circular_values[21];
    int hascountdown_started=0;
    int countdown_value=0;

    while(countdown_value<10){
        float current_tp;
        current_tp=tp;

        random_values(&tp,&tt,&tf);

        values placeholder;
        placeholder.t=t;
        placeholder.tp=tp;
        placeholder.tf=tf;
        placeholder.tt=tt;
        circular_values[t % 21]=placeholder;

        t++;

        if (hascountdown_started == 1){

            countdown_value++;
        }
        if ((tp-current_tp)>=100){
            hascountdown_started=1;
        }

    }

    FILE*fout;
    fout=fopen("output.txt","r");
    print(fout,circular_values,t-10);
    fclose(fout);

    return 0;
}