How to get minimum value in array

//How to get minimum value in array.

#include<stdio.h>
#include<conio.h>

void main()
{
  int arr[5],i,smallest_value=0,j;
  clrscr();
  printf("Enter the value of an array:\n");
  for(i=0;i<5;i++)
  {
  scanf("%d",&arr[i]);
  }

  for(i=0;i<4;i++)
  {
  if(arr[i]<arr[i+1])
  {
   arr[i+1]=arr[i];
   smallest_value=arr[i];
  }
  else
  {
   arr[i+1]=arr[i+1];
   smallest_value=arr[i+1];
  }
  }

  printf("\nSmallest value:%d",smallest_value);

  getch();
}

Output:

Enter the value of an array:
24
52
12
63
25

Smallest value:12