#include<stdio.h>

int recur(int *arr,int len)
{
 int largest=arr[0];int i=1;
 if(i<len)
  {   if(*(arr+i)>largest)
   {
    largest=*(arr+i);

   } i++;
  recur(arr,len);
  }
  return largest;
}
void iter(int *arr,int len)
{
int i;
int largest=arr[0];
for(i=1;i<len;i++)
{
if(*(arr+i)>largest)
largest=arr[i];
}
printf("%d\n",largest);
}

void main()
{
int i,largest;
int n;
scanf("%d",&n);
int arr[n];
for(i=0;i<n;i++)
{
scanf("%d",&arr[i]);
}
printf("using iteration:");
iter(arr,n);
printf("using recursion:");
largest=recur(arr,n);

printf("%d",largest);
}
\\\\\\\\\\\\\\\\\\\\\\\\
#include<stdio.h>
#include<string.h>

void main(int argc,char *argv[])
{
int i;
char arr[20];
strcpy(arr,argv[1]);
puts(arr);
}