bubble sort

#include<stdio.h>
#include<conio.h>
#include<stdlib.h>
int n=0;
void display(int m[])
{
    int i;
    printf("sorted form are :\n");
    for(i=0;i<n;i++)
    printf("%d,",m[i]);
}

main()
{
    int i,j,t;
    char ch;
    int m[100];
    printf("* * * * * * * BUBBLE sort * * * * * * * * * *");
    printf("\n____________________________________________\n");
    while(1)
    {
        printf("do you want to enter data (y/n) :");fflush(stdin);
        ch=getche();
        if(ch=='n' || ch=='N') {break;}
        printf("\nenter the data : ");
        scanf("%d",&m[n]);
        n++;
    }
    printf("\n____________________________________________");
    printf("\n1> sort in ascending order\n2> sort in descending order");
    printf("\nenter your choice :");
    ch=getche();
    printf("\n____________________________________________");
    switch(ch)
    {
        case '1':
        printf("\nthe ascending order ");
        for(i=0;i<(n-1);i++)
        {
            for(j=0;j<((n-1)-i);j++)
            {
                if(m[j]>m[j+1])
                {
                    t=m[j];
                    m[j]=m[j+1];
                    m[j+1]=t;
                }
            }
        }
        display(m);
        printf("\n____________________________________________");
        break;
        case '2':
        printf("\nthe descending order ");
        for(i=0;i<(n-1);i++)
        {
            for(j=0;j<((n-1)-i);j++)
            {
                if(m[j]<m[j+1])
                {
                    t=m[j];
                    m[j]=m[j+1];
                    m[j+1]=t;
                }
            }
        }
        display(m);
        printf("\n____________________________________________");
        break;
        default:
        printf("\n*****invalid choice*****");
    }

}