count =0 - Create a 2d array "items". (20\%) string[,] items = new string [100,4] - Create a do while loop, when user enter " 0 ", stop the loop. (20\%) - User enter item name, price, quantity, save these info and subtotal to array. - increase "count ++ " -convert price(decimal, Convert. ToDecimal ( ) and quantity(int) to do multiplication (20\%) for subtotal - create a for loop (with count ) to cycle through the "items", display item name, price, quantity, (20%) and subtotal. accumulate subtotal - Display total items, subtotal, total at the end. (20\%) Guide: string[,] items = new string [100,4]; int i,j, count; " input each array element's value */ for (i=0;i