C Program to Sort the numbers and store them in file using user define function

C Program to Sort the numbers and store them in file using user define function

C Program to Sort the numbers and store them in file using user define function

#include

int bubble(int*,int);
void filewrite();
void avgmarks();
void fileprint();
void filesort();
void rollin();

/*********************** SORTING FUNCTION ***************************/
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;jx[j+1])
  {
   switched=1;
   hold = x[j];
   x[j] = x[j+1];
   x[j+1]=hold;
   }
  }
return(0);
}
/*********************** FILE WRITING FUNCTION ******************************/

void filewrite()
{
 int roll,ch,mark;
 char nam[50];
  FILE *fp;
  clrscr();
 fp = fopen("student.txt","a");
  printf("ENTER ROLL NUMBER, NAME , MARKS \n");
 ch =1;
 while(ch)
 {
 scanf("%d%s%d",&roll,&nam,&mark);
 fprintf(fp,"%d %s %d\n",roll,nam,mark);
 printf("\n\n press 1 to continue,0 to stop");
 scanf("%d",&ch);
 }
  fclose(fp) ;
}
/******************** OUTPUTING DATA ON SCREEN***************/
void fileprint()
{
 int marks[100],rollno[100],x[100],i;
 char name[100][50];
 FILE *fp;

 clrscr();
 fp = fopen("student.txt","r");
  i=0;
  printf("ROLLNO       NAME        MARK\n");
  while(!feof(fp))
 {
    fscanf(fp,"%d %s %d\n",&rollno[i],&name[i],&marks[i]);
    printf(" %d          %s          %d\n",rollno[i],name[i],marks[i]);
    i=i+1;
  }
  fclose(fp);
  printf("\n\n\nPRESS ANY KEY");
  getch();

 }
/******************* SORTING FILE ************************/
 void filesort()
 { int marks[100],rollno[100],x[100],n,i,j;
   char name[100][50];
   FILE *fp,*fm;

   fp = fopen("student.txt","r");
   fm = fopen("marks.txt","w");
   i=0;
  while(! feof(fp))
   {

    fscanf(fp,"%d %s %d\n",&rollno[i],&name[i],&marks[i]);
    x[i]= marks[i];
    i=i+1;
     }

      n=i;

      bubble(x,n);

 for(i=0;i

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