#include <stdio.h>
#include <stdlib.h>
#include <string.h>
 
// Idea here is to enter an array of structures
// write them to disk and read them back
 
 
// simple structure
struct tuple {
	char artist[50];
	char album[50];
	char label[50];
	int year[4];
	char genre[30];
};
 
int filewrite() {
 
	// file pointer
	FILE * mydata;
 
	// structures
	struct tuple myDB[20];
	struct tuple otherDB[20];
 
	// variable needed
	int i;
 
 
	// go through each record
	// write each to disk using formatted output
	mydata = fopen("mymusic.txt","w");
	i=1;
 
		while(i){
		printf("Enter the artist: \n");
		//scanf("%s",myDB[i].artist);
		scanf("%s",myDB[i].artist);
		printf("Enter the album: \n");
		scanf("%s",myDB[i].album);
		printf("Enter label name: \n");
		scanf("%s",myDB[i].label);
		printf("Enter year: \n");
		scanf("%d",&myDB[i].year);
		printf("Enter the genre of music: \n");
		scanf("%s",&myDB[i].genre);
 
		fprintf(mydata, "%s %s %s %d %s\n",myDB[i].artist, myDB[i].album, myDB[i].label,myDB[i].year,myDB[i].genre);
		printf("\n\n press 1 to continue,0 to stop");
  scanf("%d",&i);
 
}
 
	fclose(mydata);
 
 
	// read the data 
	printf("\n\n\n\n\n\n\n\nreading data...\n");
 
	mydata = fopen("mymusic.txt","r");
 
 
	while(i){
		fscanf(mydata,"%s %s %s %d %s",otherDB[i].artist, otherDB[i].album, otherDB[i].label, &otherDB[i].year, otherDB[i].genre);
		printf("\n\n\nRecord is...\n\n\n");
		printf("%s\n",otherDB[i].artist);
		printf("%s\n",otherDB[i].album);
		printf("%s\n",otherDB[i].label);
		printf("%d\n",otherDB[i].year);
		printf("%s\n",otherDB[i].genre);
 
	}
	fclose(mydata);
 
}
//***********************************************************//
int bubble(int x[],int n)
{
 int hold,j,pass,i,switched = 1;
 for(pass = 0; pass < n-1 && switched == 1;pass++)
 {
  switched=0;
  for (j=0;j<n-pass-1;j++)
   if (x[j]>x[j+1])
   {
    switched=1;
    hold = x[j];
    x[j] = x[j+1];
    x[j+1]=hold;
    }
   }
return(0);
}
 
//****************************//
 
void main()
{
  int c;
 
  while(c!=5)
   {  
 
     printf("GIVE CHOICE--\n");
     printf("   1 TO ENTER CD INFO.\n");
     printf("   2 TO SEE STUDENT.TXT FILE\n");
     printf("   3 TO SORT CDs BASED ON ARTIST\n");
     printf("   4 TO SEARCH USING ALBUM NAME\n");
     printf("   5 TO EXIT\n\n--");
     scanf("%d",&c);
 
     switch(c)
	 {
	 case 1:
		  filewrite();
		  break;
	 case 5:
 
		  break;
	 default:
		  break;
	 }
    }
 
  }

struct tuple array[NumTuples];

int bubble(int x[],struct tuple array[], int n)
// function is going to sort array[] indirectly by use of integer 
// array x[].
{
   int i,j;
   for(i = 0; i < n-1; i++)
   {
       for(j = i+1; j < n; j++)
       {
           if( array[x[i]].Year > array[x[j]].Year)
           {
                  int hold = array[x[i]].Year;
                 array[x[i]].Year = array[x[j]].Year;
                 array[x[j]].Year = hold;
           }
        }
    }
     return 0;
}
 
int main()
{
   int i;
   struct tuple array[NumTuples];
   int indexs[NumTuples];
   // initialize indexes
   for(i = 0; i < NumTuples; i++)
        indexs[i] = i;
   // sort the array
   bubble(indexs,array, int NumTuples);
   // print each elment
   for(i = 0; i < NumTuples; i++)
       printf("%s\n", array[indexs[i]].artist);