C Program Help: Unexpected Output - c

Question

School project for Computer Science. I need to make a program where the user declares a size for an array, then fills the array in numerical, nondecreasing order, then declares a value, x. X is then assigned to the appropriate spot so the entire array is in numerical, nondecreasing order. The array is then output.
The code builds properly with no errors, but the output is messed up.
#include <stdio.h>
int main (void) {
//Local Declarations
int size;
int ary[100];
int x;
int i;
int j;
//Statements
printf("Enter the size of the array: ");
scanf("%d", &size);
printf("\nEnter digits to fill the array, in numerical order: ");
for (i = 0; i < size; i++) {
scanf("%d", &ary[i]);
}
size++;
printf("\nInput x, the value to add to the array: ");
scanf("%d", &x);
while(i=0 <= x && x > ary[i]){
i++;
j = size - 1;
while(j >= i) {
ary[j++] = ary[j];
j--;
}
}
for(i = 0; i < size; i++) {
printf("%d,", ary[i]);
}
return 0;
} //main
Example Output:
Enter the size of the array: 5
Enter digits to fill the array, in numerical order: 1
2
3
4
5
Input x, the value to add to the array: 6
1,2,3,4,5,1630076519,
Process returned 0 (0x0) execution time : 8.585 s
Press any key to continue.
It's always the last value that messes up to that huge number. I cannot for the life of me figure out why. The project is due by midnight EST.

Answer 1

For the while loop, can you try this instead,
i = 0;
while (i < x && x > ary[i]) {
i++;
j = size - 1;
while (j >= i) {
j++;
ary[j] = ary[j]; // Equivalent to ary[j++] = ary[j];, yet easier to read
j--;
}
}

Answer 2

Try this:
#include <stdio.h>
int main (void) {
//Local Declarations
int size;
int ary[100];
int x;
int i;
int j;
int temp1,temp2;
//Statements
printf("Enter the size of the array: ");
scanf("%d", &size);
printf("\nEnter digits to fill the array, in numerical order: ");
for (i = 0; i < size; i++) {
scanf("%d", &ary[i]);
}
printf("\nInput x, the value to add to the array: ");
scanf("%d", &x);
for(i=0;i<size;i++)
{
if(ary[i]>x)
{
temp1 = ary[i];
ary[i] = x;
break;
}
}
if(i==size)
{
ary[i]= x;
}
else
{
for(j=i+1;j<size+1;j++)
{
if(j==size) //Last element of the new array
{
ary[j] = temp1;
break;
}
temp2 = ary[j];
ary[j] =temp1;
temp1 = temp2;
}
}
for(i = 0; i < size+1; i++) {
printf("%d,", ary[i]);
}
return 0;
} //main