Program for shorting is not working

Question

#include<stdio.h>

#include<conio.h>

void main()

{

int arr1[5]={2,1,4,3,5},arr2[5]={6,7,9,5,8},arr3[10],i,j,temp,k=0;

clrscr();

for(i=0;i<10;i++)

{

if(i>4)

{

arr3[i]=arr2[k];

k++;

}

else

arr3[i]=arr1[i];

}

printf("elements are \n ");

for(i=0;i<10;i++)

{

printf("\n %d",arr3[i]);

}

for(i=0;i<9;i++)

{

for(j=j+1;j<10;j++)

{

if(arr3[j] >arr3[i])

{

temp=arr3[i];

arr3[i]=arr3[j];

arr3[j]=temp;

}

}

printf("\n shorted elements are \n");

for(i=0;i<10;i++)

{

printf("\t %d",arr3[i]);

}

getch();

}

}