Insertion of elements at any index in an array -- 1-D Array -- DSA in C

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// inserting at any index
 
#include<stdio.h>
 
int main() {
 
    int arr[20];
 
    int i, n, num, pos = 0;
 
 
    printf("Enter number of elements: ");
    scanf("%d", &n);
 
    for(i=0; i<n; i++) {
 
        printf("\n arr[%d] = ", i);
        scanf("%d", &arr[i]);
 
    }
 
    printf("Enter the element which is to be entered: ");
    scanf("%d", &num);
    printf("\n");
 
    printf("Now enter it's position: ");
    scanf("%d", &pos);
    printf("\n");
 
    for(i=(n-1); i>=pos; i--) {
 
        arr[i+1] = arr[i];
 
    } // shifting all elements from that position onwards to make space for the new element.   
 
    arr[pos] = num; // assigning the new element to that position.
 
    n = n+1; // increasing the total number of elements by 1.
 
    printf("The array after insertion of %d is : ", num);
 
    printf("\n");
 
    for(i=0; i<n; i++) {
 
        printf("arr[%d] = %d \n", i, arr[i]);
 
    }
 
 
}

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