Write C program to insert the values at the specific index in the array.

Sure, here is a simple C program that inserts a value at a specific index in an array:

#include <stdio.h>

void insert(int arr[], int n, int index, int value) {
    // shift elements to the right of the index
    for (int i = n; i > index; i--) {
        arr[i] = arr[i - 1];
    }

    // insert the value at the given index
    arr[index] = value;
}

int main() {
    int arr[100] = {1, 2, 3, 4, 5};
    int n = 5;
    int index = 2;
    int value = 10;

    insert(arr, n, index, value);

    // print the array
    for (int i = 0; i <= n; i++) {
        printf("%d ", arr[i]);
    }

    return 0;
}

This program defines a function insert that takes an array, the current size of the array, an index, and a value. It shifts all elements to the right of the index one position to the right, and then inserts the value at the given index. In the main function, we create an array, specify the index and the value, call the insert function, and then print the array to verify that the value has been inserted correctly.