C array nondecreasing order insert value - c

Question

I am writing a program that arranges an array in nondecreasing order; then, it inserts a value into the sequence. I can easily get numbers in the beginning and the middle of the array, but whenever I add a number that should go at the end, I keep getting 0. Where am I going wrong?
#include <stdio.h>
int main()
{
int array[10];
int i, j, n, m, temp, key, pos;
printf("Enter number of elements:\n");
scanf("%d", &n);
printf("Enter the elements:\n");
for (i = 0; i < n; i++)
{
scanf("%d", &array[i]);
}
printf("Input array elements:\n");
for (i = 0; i < n; i++)
{
printf("%d\n", array[i]);
}
for (i = 0; i < n; i++)
{
for (j = i + 1; j < n; j++)
{
if (array[i] > array[j])
{
temp = array[i];
array[i] = array[j];
array[j] = temp;
}
}
}
printf("Sorted list is\n");
for (i = 0; i < n; i++)
{
printf("%d\n", array[i]);
}
printf("Enter the element to be inserted X:\n");
scanf("%d", &key);
for (i = 0; ; i++)
{
if (key < array[i])
{
pos = i;
break;
}
}
m = n - pos + 1 ;
for (i = 0; i <= m; i++)
{
array[n - i + 2] = array[n - i + 1] ;
}
array[pos] = key;
printf("Final list is:\n");
for (i = 0; i < n + 1; i++)
{
printf("%d\n", array[i]);
}
}

Answer 1

If the number to be entered is larger than all elements the following loop poses an issue.
...
for (i = 0; ; i++)
{
if (key < array[i])
{
pos = i;
break;
}
}
If the number is largest,then the pos will be junk and not n.The default value of an array is junk.
Replace it with this.
for (i = 0;i<n ; i++)
{
if (key < array[i])
{
break;
}
}
pos = i;
...