C programming : Use the ptr pointer and complete the following program to read and store integers into arr, with the restriction to store an input number only if it is less than the last stored number. The value 1 should not be stored in the array. If the user enters 0 or if there is no other free place, the insertion of numbers is to terminate and the program is to display how many numbers were stored in the array. The program is to prompt the user to input the numbers, as follows: Enter number_1: Enter number_2: ... int main(void) { int *ptr, arr[100]; ... }