#include <stdio.h> 

int main(void) { 
  int arr[5]={1,2,3,4,5}; 
  int i;
  int indexnumber, arrayvalue;

  //display initial value
  printf("Displaying array values.\n");
  for(i=0; i<5;i++){
    printf("%d\n", arr[i]); 
  }
  printf("Done.\n");

  //set new value
  printf("Enter array index number to edit:\n");
  scanf("%d",&indexnumber);
  printf("Enter new value:\n");
  scanf("%d",&arrayvalue);  
  arr[indexnumber-1]=arrayvalue;

  //display updated value
  printf("Displaying array values.\n");
  for(i=0; i<5;i++){
    printf("%d\n", arr[i]); 
  }
  printf("Done.\n");

  return 0; 
}