Doubt at middle

Question

void main() {

  int i, j, a, n, number[30];

  printf("Enter the value of N \n");

  scanf("%d", &n);

  printf("Enter the numbers \n");

  for (i = 0; i < n; ++i) {

    scanf("%d", &number[i]);

  }

  for (i = 0; i < n; ++i) {

    for (j = i + 1; j < n; ++j) {

      if (number[i] > number[j]) {

        a = number[i];

        number[i] = number[j];

        number[j] = a;

      }

    }

  }

  printf("The numbers arranged in ascending order are given below \n"

Answer 1

I is the index no of array
j is the next index no of array
a=array[I] // means value of array at I index will be stored in it.
array[I]= array[j] // means value of array at j index will be stored at array[I]
array[j]=a // means value of a (previous value of array[I] will be stored at array[j]

This whole process is sorting.

Answer 2

what is the purpose of j array in this code

Answer 3

what is mean by it
a=array [i]
array [i]=array [j]
array [j]=a

Answer 4

thank you