Here is the C++ program to insert an element in an array. The array must be in ascending order.
For example the array is 1 4 6 7.
We have to insert 5.
Then the resultant array will be 1 4 5 6 7.
The program is given below.
C++ Program to Insert an Element in an Array
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 | #include<iostream> using namespace std; int main() { int a[20], n, x, i, pos = 0; cout << "Enter size of array:"; cin >> n; cout << "Enter the array in ascending order:\n"; for (i = 0; i < n; ++i) cin >> a[i]; cout << "\nEnter element to insert:"; cin >> x; for (i = 0; i < n; ++i) if (a[i] <= x && x < a[i + 1]) { pos = i + 1; break; } for (i = n + 1; i > pos; --i) a[i] = a[i - 1]; a[pos] = x; cout << "\n\nArray after inserting element:\n"; for (i = 0; i < n + 1; i++) cout << a[i] << " "; return 0; } |
Output
Enter size of array:5
Enter the array in ascending order:
1 3 4 6 9
Enter element to insert:2
Array after inserting element:
1 2 3 4 6 9
