(Sum the digits in an integer) Write a program that reads an integer between 0 and
1000 and adds all the digits in the integer. For example, if an integer is 932, the
sum of all its digits is 14. (Hint: Use the % operator to extract digits, and use the //
operator to remove the extracted digit. For instance, 932 % 10 = 2 and 932 //
10 = 93.) Here is a sample run:
Enter a number between 0 and 1000: 999 Enter
The sum of the digits is 27