/*Finds the largest integer value in an array and displays the value and the subscript*/
#include <stdio.h>
 
#define MAX_INT 20
#define SENT   -99
 
int  fill_to_sent(SENT, int arr[], int *arr_sizep);
int  get_max(int *const arr[], int n);
int  get_sub(int *const arr[], int n);
 
int
main(void)
 
{
	int arr[MAX_INT],			/*data list  */
		in_use,			/*number of elements filled  */
		cur_large,		/*largest value so far  */
		large_sub;		/*subscript of largest value  */
 
	/*Fills array with up to 20 integers */
	fill_to_sent(SENT, arr[], &in_use);
 
	/*Finds largest integer in array */
	get_max(const arr[], in_use);
 
	/*Finds subscript value for largest integer*/
	get_sub(const arr[], in_use);
 
	printf("The largest integer entered is %d and the subscript value is %d\n", &cur_large, &large_sub);
 
	return(0);
 
}
 
/*Gets integers to fill arr until the sentinel value is encountered.
*Pre: SENT and MAX_INT are defined and MAX_INT is the declared size of arr.*/
 
int
fill_to_sent(SENT,	/*input - end of data value in input list */
	 int arr[],	/*output - array of data */
	 int &in_use);/*output - number of array elements filled */
 
{
	int data, 
	     i, 
	     status;
	printf("Please enter up to 20 integers.\n");
	printf("When you are finished entering integers,\n");
	printf("enter %d to show you are done.\n", &SENT);
 
	i = 0;
	status = scanf("%d", &data);
	while (status == 1 && data != SENT && i < MAX_INT){ 
		arr[i] = data;
		++i;
		status = scanf("%d", &data);
	}
 
	/*Issues error message for incorrect data */
 
	if (status != 1) {
		printf("\n*** Error in data format ***\n");
		printf("*** Using first %d integers entered ***\n", i);
	} else if (data != SENT) {
		printf("\n*** Error: too many integers were entered ***\n");
		printf("*** Using first %d integers entered ***\n", i);
	}
 
	*arr_sizep = i;
}
 
/* Returns the largest integer in the used array elements */
 
int 
get_max(int *const arr[],	/*input - list of intergers */
              int arr_sizep)	/*input - number of elements to examine */
 
{
	int i,
	cur_large;		/*largest value so far */
 
	/*Initial array element is largest so far */
	cur_large = arr[0];
 
	/*Compare each remaining list element to the largest so far and save the larger */
	for (i = 1; i < arr_sizep; ++i)
		if (arr[i] > cur_large)
			cur_large = arr[i];
 
	return (cur_large);
 
}
 
/*Returns the subscript value of the largest integer */
 
int
get_sub(int *const arr[],
		int arr_sizep)
 
{
	int i,
		large_sub;
 
	large_sub = 0;
 
	for (i = 1; i < arr_sizep; ++i)
		if (arr[i] > arr[large_sub])
			large_sub = i;
	return (large_sub);
 
}

#include<stdio.h>
 
int main()
{
    int a[20],i,n,big,subscript=0;
    printf("enter the no of elements (MAX IS 20!)\n");
    scanf("%d", &n);
    printf("Enter the elements\n");
    for(i=0;i<n;i++)
    scanf("%d",&a[i]);
    big=a[0];
    for(i=1;i<n;i++)
    {
           if(a[i] > big)
           {
                   big=a[i];
                   subscript=i;
           }
    }
 
    printf("Biggest element is %d\n", big);
    printf("Subscript is %d\n", subscript);
    getch();
    return 0;
}