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

struct Shift
 {
 char name[100];
 char day_of_week[100];
 int start_hour;
 int end_hour;
 };

struct Shift shift_data[100];
struct Shift temp;

int read_data(struct Shift shift_data[], int *num_shifts);
void sort_data(struct Shift shift_data[], int num_shifts);
void sort_data(struct Shift shift_data[], int num_shifts);





int main()
  {
    int num_shifts;

    read_data(shift_data, &num_shifts);

  //  void sort_data(struct Shift shift_data[], int num_shifts);

    print_data(shift_data, num_shifts);

    return 0;

  }



// Preconditions: array of structure "Shift" to store data
// Postconditions: number of shifts read in from data file
// Actions: Ask user for name of input file. Read the number
// of shifts, then read in the data for all
// of the shifts. Return the number of shifts.
int read_data(struct Shift shift_data[], int *num_shifts)
{
    char input_schedule[100];

    int i;


    printf("What is the name of the file?\n");
    scanf("%s",input_schedule);

    FILE *ifp;
    ifp=fopen(input_schedule,"r");

    fscanf(ifp,"%d",num_shifts);

    printf("numshifts = %d", num_shifts);

    for(i=0;i<*num_shifts;i++)
    {
        fscanf(ifp,"%s",&shift_data[i].name);
        fscanf(ifp,"%s",&shift_data[i].day_of_week);
        fscanf(ifp,"%d",&shift_data[i].start_hour);
        fscanf(ifp,"%d",&shift_data[i].end_hour);
    }

    fclose(ifp);
    return num_shifts;
  }



// Preconditions: array of structure "Shift"
// integer value indicating number of shifts
// Postconditions: none - this function does not return anything.
// Actions: Sort the shifts by the TA's first name.
/*
void sort_data(struct Shift shift_data[], int num_shifts)
{

int i,j;

for(i=0;i<num_shifts;i++)
{
    for(j=i+1;j<num_shifts;j++)
    {
        if(strcmp(shift_data[i].name,shift_data[i].name)<0)
        {
            temp[i]=shift_data[i];
            shift_data[i]=shift_data[j];
            shift_data[i]=temp[i];
        }
        if(strcmp(shift_data[i].day_of_week,shift_data[i].day_of_week)<0)
        {
            temp[i]=shift_data[i];
            shift_data[i]=shift_data[j];
            shift_data[i]=temp[i];
        }
       if(strcmp(shift_data[i].start_hour,shift_data[i].start_hour)<0)
        {
            temp[i]=shift_data[i];
            shift_data[i]=shift_data[j];
            shift_data[i]=temp[i];
        }
        if(strcmp(shift_data[i].end_hour,shift_data[i].end_hour)<0)
        {
            temp[i]=shift_data[i];
            shift_data[i]=shift_data[j];
            shift_data[i]=temp[i];
        }
}

}
*/

// Preconditions: array of structure "Shift"
// integer value indicating number of shifts
// Postconditions: none - this function does not return anything.
// Actions: Print the sorted data in the format described below.

void print_data(struct Shift shift[], int num_shifts)
{
   int i;

   printf("\n\n\n");

   for(i=0;i<num_shifts;i++)
   {
       printf("%s\t\t",shift_data[i].name);
       printf("%s\t",shift_data[i].day_of_week);
       printf("%d to ",shift_data[i].start_hour);
       printf("%d\n",shift_data[i].end_hour);

           if(shift_data[i].start_hour>12)
           {
               shift_data[i].start_hour=shift_data[i].start_hour-12;
               printf("%2d:00 pm to  ", shift_data[i].start_hour);
           }
           else if(shift_data[i].start_hour<12)
           {
               printf("%2d:00 am to  ", shift_data[i].start_hour);
           }
           else if(shift_data[i].start_hour==12)
           {
               printf("%2d:00 pm to  ", shift_data[i].start_hour);
           }


           if(shift_data[i].end_hour>12)
           {
               shift_data[i].end_hour=shift_data[i].end_hour-12;
               printf("%2d:00 pm\n", shift_data[i].end_hour);
           }
           else if(shift_data[i].end_hour<12)
           {
               printf("%2d:00 am\n", shift_data[i].end_hour);
           }
           else if(shift_data[i].end_hour==12)
           {
               printf("%2d:00 pm\n", shift_data[i].end_hour);
           }

    }
return 0;
}